CN109577988A - A kind of blind oblique vertical shaft parallel construction method of metal mine - Google Patents
A kind of blind oblique vertical shaft parallel construction method of metal mine Download PDFInfo
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/04—Transport of mined material in gravity inclines; in staple or inclined shafts
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
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- Fluid Mechanics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention discloses a kind of blind oblique vertical shaft parallel construction method of metal mine, the probing of (A) injected hole；(B) injected hole slip casting；Work is prepared in step (A) and step (B) work progress, while to the blind oblique vertical shaft of metal rock.112 line interior shaft pit shaft pre-pouring grout engineering of Yiliang Chi Hong mining industry Co., Ltd Maoping Pb-Zn ore deposit, in progress on December 30th, 2016 feasibility test, the completion feasibility test on the 14th of September in 2017, last 258 days, using the blind oblique vertical shaft parallel construction method of this metal mine, it can be in the process of injected hole probing mortar depositing construction, the preparation of the blind oblique vertical shaft of metal rock is not delayed, due to boring nest chamber arrangement apart from the blind position oblique vertical shaft 14m, it will not influence the preparation of the blind oblique vertical shaft of metal rock, so that injected hole is drilled, mortar depositing construction is parallel with the preparation of the blind oblique vertical shaft of metal rock to be carried out.
Description
Technical field
The present invention relates to wellbore construction technical fields.Specifically a kind of blind oblique vertical shaft parallel construction of metal mine
Method.
Background technique
In underground water oblique vertical shaft construction blinder than more rich metal mine metal mine, blind oblique vertical shaft is passed through
Stratum in encounter solution cavity, larger crack, fault belt and slight crack and hole probability it is larger when, water yield compared with
Greatly, once meeting sudden water burst, when water yield is greater than pumping drainage ability, it will result in the accident generation for flooding well.This is just needed
Pre-pouring grout is carried out to " the blind oblique vertical shaft of metal mine metal mine " surrounding formations, so that water yield is arranged less than or equal to water pump
Outlet capacity thoroughly avoids sudden water burst, it is ensured that " the blind oblique vertical shaft of metal mine metal mine " construction is gone on smoothly.
In order to shorten " the blind oblique vertical shaft of the metal mine metal mine " construction period, while ensuring " metal mine metal
The generation of well accident will not be flooded in the blind oblique vertical shaft in mine " work progress, needed " metal mine metal mine is blind tiltedly perpendicular
The construction of well shaft " combines with pre-pouring grout work, could not influence the completion time of project in this way.
Summary of the invention
For this purpose, technical problem to be solved by the present invention lies in a kind of blind oblique vertical shaft parallel construction sides of metal mine
Method.
In order to solve the above technical problems, the invention provides the following technical scheme: a kind of blind oblique vertical shaft of metal mine is flat
Row construction method includes the following steps: that (A) is drilled around the injected hole of the blind oblique vertical shaft (2-12) of metal rock；(B) around gold
Belong to the injected hole slip casting of the blind oblique vertical shaft (2-12) of rock；(C) in step (A) and step (B) work progress, while to metal rock
Blind oblique vertical shaft (2-12) is prepared work and drilling construction, to blind oblique vertical shaft (2-12) drilling of metal rock to away from
It is 120m from water yield at issue3/ h or more, the high pressure-bearing crevice water stratum that aperture hydraulic pressure is 1.90MPa or more are greater than or wait
When 35m, waiting injected hole to pass through, " water yield is 120m at issue3/ h or more, the height that aperture hydraulic pressure is 1.90MPa or more
After pressure-bearing crevice water stratum " and slip casting, it is further continued for carrying out blind oblique vertical shaft (2-12) drilling construction of metal rock.
Technical solution of the present invention achieves following beneficial technical effect:
1. destroying 112 line interior shaft wells since interior shaft pit shaft has been constructed to 481m absolute altitude to prevent from boring nest Chamber Construction
The stability of cylinder and existing tunnel, the present invention are remotely creating three brill nest chambers around pit shaft, and in original 110 line
Roadway layout slip casting chamber improves the stability between chamber group.
2., by probing grouting equipment dismantling, reducing probing grouting equipment before large size probing grouting equipment transport and transporting
Damage of colliding in journey.The route of decentralization is selected, finally according to operation the characteristics of probing grouting equipment and on route
Ability, selected 901 main haulage roadways are transported to the blind combined shaft of 112 lines, then transfer to 670 middle section head of the horses by the blind combined shaft of 112 lines
Door, last 670 middle section ingates again are transported to slip casting chamber and bore each operating position of nest chamber.By the probing grouting equipment of dismantling
Be divided into three classes equipment, and first kind equipment is the big part of single-piece size, and the second class equipment is the part that single-piece is small in size but quality is big, the
Three classes equipment is that single-piece is elongate articles, and formulates different transhipments according to the different feature of three classes equipment, transfers, passes through ingate
Method, so that large-scale probing grouting equipment is smoothly gone into the well, and complete to install.Safe thing together does not occur in decentralization transportational process
Therefore.During decentralization, since underground drilling nest chamber space is limited, the sequencing of equipment decentralization need to be according to underground equipment group
Sequencing and space requirement are filled to arrange.For 112 line interior shaft pre-pouring grout engineering of Maoping Pb-Zn ore deposit, using interior shaft conduct
Transport channel smoothly solves the problems, such as that large-scale slip casting drilling equipment is gone into the well.This TSJ-2000 type drilling machine and 350 pump grouting pumps
It goes into the well and constructs for the first time for the country.Large scale equipment carries out equipment using interior shaft and transfers transportation resources, fast with lowering velocity,
The advantages that at low cost, high stability, can go into the well for similar large scale equipment and provide important reference significance.
3. using the hole S directional drilling 6, cloth hole circle diameter about 28m, drop point circle diameter 9.5m, drill 670 m of aperture absolute altitude, eventually
Hole absolute altitude -80m, drilling depth 750m, aperture bore are not less than 190mm, and whole hole is not less than 133mm, timely root in drilling process
Deviational survey, orientation works are carried out according to drilling situation, preferably controls the deflection of drilling, maximum deflection rate is 2.82 ‰.
4. adaptation to local conditions selects particle thinner, sand content is low, the clay with very high dispersion degree, so that clay cement
Slurry pulp stability is good, and slurries are not isolated, do not precipitated in pumping and diffusion process, and bleed is few in process of setting, and calculus rate is high,
Anti-permeability performance is good, and good fluidity is easy to penetrate into the tiny crack of rock stratum.
5. for 112 line interior shaft pit shaft pre-pouring grout of Maoping Pb-Zn ore deposit drilling water burst problem, using aggravate drill assembly,
It adjusts mud balance, the drilling progress that is staggered and visits water in advance, small distance drilling alternately infuses clay cement slurry, the key combined
Technology, process is well-organized, scientific management, has efficiently controlled drilling water burst problem, aggregate measures work well, guarantee simultaneously
The smooth drilling of drilling, realizes safe and efficient production.
6. 112 line interior shaft pit shaft pre-pouring grout engineering of Yiliang Chi Hong mining industry Co., Ltd Maoping Pb-Zn ore deposit drills matter through self-test
Amount is good, and S type of constructing altogether drills 6, cloth hole circle diameter about 28m, drop point circle diameter 9.5m, and drill aperture absolute altitude 670m, whole hole mark
Height -80m, drilling depth 750m, aperture bore are not less than 190mm, and whole hole is not less than 133mm, and Hole deviation is not more than 3 ‰,
Distribution of boreholes and deviation proportion meet design requirement, and the grouting parameters such as final grouting pressure and injection rate basically reach design standard, slurries
Water block curtain is completely effective, and calculating estimated surplus inflow of water through packer permeability test is 4.83m3/h, reaches contract requirement, complete
It is required at grouting for water blocking.
7. pair complete anti-riparian work of basement rock interior shaft pre-pouring grout started to enter construction site early period on December 30th, 2016
It is tested, the off-test on the 14th of September in 2017 lasts 258 days, test result shows: using the blind oblique vertical shaft of this metal mine
Pit shaft parallel construction method can not delay the preparation of the blind oblique vertical shaft of metal rock in the process of injected hole probing mortar depositing construction
It is blind to will not influence metal rock since brill nest chamber arrangement is apart from the blind position oblique vertical shaft 28m for work and drilling work
The preparation and drilling work of oblique vertical shaft, so that injected hole probing mortar depositing construction and the blind oblique vertical shaft of metal rock
Prepare and drilling work carries out in parallel.
Detailed description of the invention
Ground slurry preparing station planar structure schematic diagram in Fig. 1 present invention；Grouting chamber and brill nest chamber in Fig. 2 present invention
Plane of arrangement structural schematic diagram；Slip casting chamber structural schematic diagram in Fig. 3 present invention；Nest chamber plan structure is bored in Fig. 4 present invention
Schematic diagram；Nest chamber is bored in Fig. 5 present invention along the diagrammatic cross-section of the upper bottom surface width direction of top truncated rectangular pyramids structure；Fig. 6 sheet
Nest chamber is bored in invention along the diagrammatic cross-section of the upper bottom surface length direction of top truncated rectangular pyramids structure；Nest connection is bored in Fig. 7 present invention
The schematic cross-section in network road；Underground passage position view in Fig. 8 present invention；Third class equipment drilling rod passes through in Fig. 9 present invention
670 ingates simulate schematic diagram；Third class equipment boring tower simulates schematic diagram by 670 ingates in Figure 10 present invention；Figure 11 sheet
S-shaped directional drilling Trajectory Design schematic diagram in invention；Drilling track the schematic diagram of the section structure in Figure 12 present invention；Figure 13 present invention
Middle clay cement slurry property studies flow chart；The preparation method flow chart of clay slurry in Figure 14 present invention；It is sticked in Figure 15 present invention
Influence diagram of the clay density to plastic strength in soil-cement slurry；Cement consumption is strong to plasticity in clay cement slurry in Figure 16 present invention
The influence diagram of degree；Influence diagram of the waterglass dosage to plastic strength in clay cement slurry in Figure 17 present invention；In Figure 18 present invention
Single liquid cement slurry slip casting flow chart；Clay cement slurry slip casting flow chart in Figure 19 present invention；Drilling K1 is the in Figure 20 present invention
Water absorption comparison diagram before and after slip casting in three slip casting sections；Drill K1, drilling K2, drilling K3, drilling K4, drilling K5 in Figure 21 present invention
With drilling K6 specific water absorption comparison diagram before third slip casting section slip casting；The practical exposure slurries Seed harvest of pit shaft in Figure 22 present invention
Figure；The practical exposure slurries Seed harvest figure of second pit shaft in Figure 23 present invention.Appended drawing reference indicates in figure are as follows: 1-1: mound field；
1-2: magma pond；1-3: pulp storage tank；1-4: slip house；1-5: slurrying platform；1-6: storehouse；2-3: nest connecting taxiway is bored；2-4: heavy
Shallow lake pond；2-5: motor chamber；2-6: ditch；2-7: waterglass pond；2-8: clear water reserviors；2-9: stirring pool；2-10: grouting pump；2-
11: slip casting chamber；2-12: interior shaft pit shaft；2-13:110 line tunnel；2-14:1 brill nest；2-15:2 brill nest；2-16:3
Number brill nest；2-17:114 line tunnel.AB: straight hole section；BC: increasing hole angle section；CD: steady tilted section；DE: drop angle section.
Specific embodiment
Yiliang Maoping Pb-Zn ore deposit area, Chi Hong mining industry Co., Ltd shows the underground mineral exploitation a height of 610 meters of middle sections of lowest bid, mesh
The preceding mineral reserve verified 610 meters of middle sections or less and still had rich reserves, the deep resource for the purpose of developing deep mineral reserve persistently connect
For the emphasis of engineering department the said firm strategic development planning, which takes over 112 line interior shaft pit shafts of ancillary engineering facility construction
It is the most important thing of the project again.
The proposed 112 line vertical shaft of Yiliang Chi Hong mining industry Co., Ltd Maoping Pb-Zn ore deposit is using round blind combined shaft, mineshaft diameter
5.7m, digging diameter 6.5m.Well head is set in existing 910m entry, designs mine shaft depth 960m, absolute altitude is from 910m to -50m.
The vertical shaft is by the main thoroughfare as transports such as mining operators, equipment, material and ores.As shown in table 1.
1 wellbore technologies mark sheet of table
Vertical shaft prospecting results of drilling shows that proposed perpendicular down-hole formation is to unite in Devonian system government official's lattice group within the scope of drilling depth
Micro- Baiyun rock mantle stratum, structural fracture and crushed zone are more developed, and when being drilled to height above sea level -50.27m on 2 7th, 2015, are met
Big structural fissured water, aperture hydraulic pressure reach 1.9MPa, and drilling operation is difficult to carry out.Probing terminates in advance.Former vertical shaft has been dug
477m absolute altitude is proceeded to, through grouting and grouting behind shaft or drift lining, surplus inflow of water about 50m3/h.To guarantee vertical shaft toward deeply
The smooth driving in portion, Yiliang Chi Hong mining industry Co., Ltd determine that commission applicant implements pre-pouring grout to the pit shaft and harnesses the river test.
Background overview
1. engineering geological condition
1.1 stratum
According to vertical shaft surveys, proposed pit shaft absolute altitude 910m plane (pit shaft mouth) to stratum disclosed by drilling depth successively
The micro- Baiyun rock mantle of system third Asia section (D3zg3), the Devonian system in lattice group, which are killed, for the Devonian system kills the sub- section (D3zg2) of system second in lattice group
Micro- Baiyun rock mantle and first sub- section (D3zg1) micro- Baiyun rock mantle.The lithologic character on each stratum presses exposure sequence from top to bottom
It is described as follows:
(1) Devonian system kill in lattice group system third Asia section (D3zg3) micro- Baiyun rock mantle 1. -0 (1. -0 numbered for stratum, under
Together): canescence, grey, in-thick-layer shape, it is thin to middle crystalline structure, part press from both sides the paper shale of 1-20cm thickness, calcareous shale and
Small-sized Pb- Zn orebody.It is 910~803m (being detailed in attached drawing 5 " integration engineering log sheet ") that the layer, which is distributed absolute altitude,.Rock mass occurrence
Whole is about 86 ° of ∠ 63-72 °, and formation dip has the tendency that gradually steepening, developmental joint fissure, fissure-plane from superficial part toward deep
It is mostly filled by calcite veins and clay mineral, the accidental small druse of corrosion in part.The stratum body is integrally more complete, and part is developed
Structurally fractured zone belongs to compared with hard rock, rock mass basic quality's grade is III-V grade in broken-smashed to pieces shape.
(2) 1. the Devonian system kills sub- section (D3zg2) the micro- Baiyun rock mantle of system second in lattice group: grey, canescence, in-thick-layer
Shape, thin to middle crystalline structure, part presss from both sides paper shale, calcareous shale and the small-sized Pb- Zn orebody of 1-20cm thickness.Rock mass occurrence is whole
Body is about 83 ° of ∠ 72-81 °, and formation dip has the tendency that gradually steepening from superficial part toward deep.Developmental joint fissure, line gap rate one
As be greater than 5/m, be structure type crack, crack spacing majority is less than 0.2m, is in closed form more, parts a little on a small quantity, crack is wide general
1-3mm, fissure-plane are mostly filled by calcite veins, and partial stowage's grey black clay mineral and pyritization have no clear dissolution
Phenomenon, the accidental small druse of corrosion in part.The stratum body is integrally more complete-relatively broken, and core is in short cylinder, bulk, part more
It develops structural fracture and speculates structurally fractured zone, rock mass is smashed to pieces, and core is in chunky shape, gritty folder shale object, belong to compared with hard rock,
Rock mass basic quality's grade is III-V grade.
(3) 2. the Devonian system kills sub- section (D3zg1) the micro- Baiyun rock mantle of system first in lattice group: canescence, grey, in-thick-layer
Shape, in-coarse-crystalline structure, rock mass occurrence is integrally about 81 ° of ∠ 81-84 °, and formation dip has gradually steepening from superficial part toward deep
Trend.Developmental joint fissure, line gap rate are generally higher than 3/m, are structure type crack, crack spacing majority is less than 0.2m, more
It in closed form, parts a little on a small quantity, the wide general 1-3mm in crack, fissure-plane is mostly filled by calcite veins, partial stowage's grey black clayey
Mineral and pyritization, accidental Pb-Zn deposits dip dyeing, 195.68~194.88m of absolute altitude press from both sides grey black culm thin layer, have no bright
Aobvious corrosion phenomenon, rock mass is more complete-relatively broken, and core is in long column shape, column, a small amount of bulk more, and part speculates structurally fractured zone
Rock mass is smashed to pieces, and core is in chunky shape, gritty folder shale object, is belonged to compared with hard rock, and rock mass basic quality's grade is III-V grade, is bored
Kong Wei exposes the layer, discloses thickness 587.45m, absolute altitude 537.18~(- 50.27) m at present.
1.2 geological structure
Vertical shaft place and its periphery geological structure are complicated, are mainly shown as crossdrift bank anticline gauffer construction and rift structure.
(1) gauffer: proposed vertical shaft place is located at crossdrift bank anticline east wing the north, apart from anticline axle portion about 180m.Probing is taken off
Dew is Devonian strata, which is influenced by arch structure, and formation dip has the tendency that gradually steepening, rock mass from superficial part toward deep
Occurrence substantially 86-81 ° of ∠ 63-85 ° of east northeast.
(2) tomography: according to areal geology data, proposed vertical shaft place and its circumferential fault structure development, the structural fault
Mostly earth's surface superficial part tomography, according to its occurrence combination vertical shaft site location, on vertical shaft place, there may be the structural faults of influence
Mainly there is F1 and F52.Wherein: F1 tomography discloses position and is located at absolute altitude about 880m that substantially Ze He arranges exhibits along Lip river, totally walks southwards
North controls the distribution in the area river Nei Luoze, be area in shaping age the latest, largest, the strongest tomography of destructive power, should
Important channel of the structural fault system surface water to the recharge of ground water；F52 is located at proposed vertical shaft place north side, and tendency is due south
Direction, thus it is speculated that the tomography may impact vertical shaft place crushing rock formation.Secondly, proposed vertical shaft site elevation 670m plane
Interior, structural feature is mainly shown as that structural fracture development, groundwater flow are complicated, according to tune based on small-scale compressional fault construction
Display is looked into, tunnel discloses a NE trend faults at the about 180m of wellbore centre northwest side, its occurrence about east southeast is disclosed in the plane
51-73 ° of ∠ 33-34 °, width about 0.4m, extension scale is unknown, and occurrence speculates that the tomography may be to vertical shaft place rock stratum accordingly
It is broken to impact.
(3) structural fracture and crushed zone: the probing of prospecting hole is the results show that stratigraphic structure crack and crushed zone development, drilling
Penetrating ground many places find that structural fracture, structurally fractured zone, detailed features are shown in Table 2.
2 crushed zone of table and fractured zones mark sheet
1.3 pit shaft hydrogeologic conditions
(1) surface water: proposed vertical shaft place surface water body is mainly Lip river pool River system, in rainy season 7-August part crest discharge
326m3/s.Normal discharge 16.3m3/s, minimum discharge appear in for 2~March, flow 12.1m3/s.Lip river Ze He from south to north in
Pass through at the about 650m of proposed vertical shaft place west side, according to Regional tectonic conditions and Regional Hydrologic condition, proposed vertical shaft region Luo Ze
River is located at the western wing of crossdrift bank anticline, and proposed vertical shaft is located at the anticline east wing, and the attitude of rocks occurs in anticline axle portion reversely, respectively to two
A possibility that inclination tiltedly, and contacts between each rock stratum in parallel unconformity, therefore Lip river pool river water is fed along crack in layer is small.But due to area
Interior rich water tomography and structurally fractured zone development, Lip river pool river water may be along fault tectonic crack and structurally fractured zone channel recharge laterally
Vertical shaft place underground water, and Lip river Ze He passes through strong rich water geohydrologic unit where proposed vertical shaft, therefore, Lip river pool river water is to vertical shaft
The influence on groundwater in proposed place is larger.
(2) drift dewatering: projects awaiting construction are located in the tunnel that the following absolute altitude of earth's surface is 910m plane, because exploitation needs, mesh
It is preceding to build tunnel respectively at 910m, 760m, 670m plane, gutter is laid along tunnel, according to nearest actual-structure measurement, at present
910m plane is because of lower part drainage, and water yield is small in tunnel, 760m plane water burst total amount about 85~240m3/h, 670m plane water burst
Total amount about 600~1200m3/h.It is larger that tunnel water yield by mine Human dried bloodstains is influenced amplitude of variation.Each tunnel is by original
Trunk tunnel branch heading composition, trunk tunnel are extended from old Shaft Location to east and west sides, and branch heading is along trunk tunnel two
Side distribution.Drift dewatering system and tunnel distribution are consistent.Low between major trunk roads generally two sides senior middle school, secondary tunnel is generally interior high outer
It is low, and most of drainage system has used cement to grout processing, it is therefore, small to proposed vertical shaft influence on groundwater.
(3) underground water 1. water-bearing layer: proposed place is located at massif deep, and groundwater type is mainly shown as structural fracture
Water, preservation in each layer structural fracture and crushed zone in.According to Regional Hydrologic data and results of drilling, the tax water in each water-bearing layer
Feature is as follows: the Devonian system kills third Asia section (D3zg3) micro- Baiyun rock mantle of uniting in lattice group: fault tectonic crack and crushed zone in layer
Development, along a small amount of karsts developing area of the plane of disruption, connectivity is relatively preferable, according to Regional Hydrologic data, 2~11.8L/s of spring flux.For
Weak-medium watery water-bearing layer.The Devonian system kills sub- section (D3zg2) micro- Baiyun rock mantle of system second in lattice group: fault tectonic in layer
Crack and crushed zone development, but fracture connectivity is general, has no corrosion phenomenon, and water yield is relatively small, is that weak watery is aqueous
Layer.The Devonian system kills sub- section (D3zg1) the micro- Baiyun rock mantle of system first in lattice group: big karst phenomenon is had no when probing, but in layer
Fault tectonic crack and crushed zone development, connectivity is general~good, is strong watery water-bearing layer.
2. underground water gushes out drilling orifice, and many places, which are seen, gushes during underground water water fathering observed case summarizes prospecting hole drilling
Gushing water phenomenon, Groundwater Observation brief account situation such as the following table 3.
3 underground water hydrology observed case table of table
3. Characteristics of Groundwater and supply runoff tentatively judge: according to region hydrogeology data and this surveys, field
Mainly there is system government official lattice group third Asia section (D3zg3) (910~803m of absolute altitude) on the Devonian system in ground water-bearing layer, system kills lattice group on the Devonian system
System kills sub- section (the D3zg1) [absolute altitude of lattice group first on second sub- section (D3zg2) (803~537.18m of absolute altitude) dolomite and the Devonian system
537.18~(- 50.27m)] dolomite, be now described below by stratum: system kills lattice group third Asia section (D3zg3) (mark on the Devonian system
High 910~803m) dolomite: this layer of fracture connectivity is general, is weak-medium water rich strata, and groundwater type predominantly constructs
Crevice water.Receive Atmospheric precipitation, surface water or the supply of infrastructure crevice water, meanwhile, because of hydrophobic, underground water section edge of digging up mine
Crack flows to tunnels at different levels, then is expelled to surface drainage through drift dewatering system.System kills the sub- section of lattice group second on the Devonian system
(D3zg2) (803~537.18m of absolute altitude) dolomite: judging according to the hydrological observation result in drilling process, this layer of crack connects
The general character is general, is weak water rich strata, groundwater type is mainly structural fissured water.Receive Atmospheric precipitation, surface water or deep structure
Make crevice water supply, wherein 803~610m of absolute altitude section because mining it is hydrophobic, local underground water flows to tunnels at different levels along crack, then passes through
Drift dewatering system is expelled to surface drainage.The sub- section (D3zg1) of government official's lattice group of uniting on the Devonian system first [absolute altitude 537.18~(-
50.27m)] dolomite: cranny development, fissure-plane are mostly filled by calcite veins, and structurally fractured zone is developed in layer, fracture connectivity
It preferably, is strong water rich strata, groundwater type is mainly structural fissured water.Its Source Of Supply may have following situations: by atmosphere
Precipitation, Lip river pool river water are fed along structural fracture；By periphery underground water along infrastructure crack recharge laterally etc..
It is parallel using the blind oblique vertical shaft of metal mine by the analysis on stratum, construction and hydrologic condition to interior shaft
Construction method can save the duration, specifically comprise the following steps: the slip casting of (A) around the blind oblique vertical shaft (2-12) of metal rock
Hole probing；(B) around the injected hole slip casting of the blind oblique vertical shaft (2-12) of metal rock；(C) it constructs in step (A) and step (B)
Process, while work and drilling construction are prepared to the blind oblique vertical shaft (2-12) of metal rock, to the blind oblique vertical shaft of metal rock
Pit shaft (2-12) drilling water yield extremely at issue is 120m3/ h or more, the Gao Cheng that aperture hydraulic pressure is 1.90MPa or more
When crevice water stratum being pressed to be greater than or equal to 35m, waiting injected hole to pass through, " water yield is 120m at issue3/ h or more, hole saliva
Pressure be 1.90MPa or more high pressure-bearing crevice water stratum " and slip casting after, be further continued for carry out the blind oblique vertical shaft of metal rock
(2-12) drilling construction.
(A-1) ground slurry preparing station, grouting chamber and the stability arrangement for boring nest chamber: since existing 112 line is blind perpendicular
Well, which has been crept into, to have tunneled to+481m, meets big water burst, shut-in well, therefore damages to avoid having dug pit shaft block part, in advance
The work surface of grouting and water-proof construction is located at 670 absolute altitude of underground, and lower part has offered two tunnels, two roadway distance interior shafts
Distance centered on pit shaft is 40m.Therefore when arrangement bores nest chamber, need to consider ground existing utility, existing tunnel and ground
The lower newly-built influence for boring nest chamber to interior shaft wellbore stability
At one ground slurry preparing station of ground configuration that absolute altitude is 901m, ground is arranged in the underground activities platform that absolute altitude is 670m
Lower slip casting chamber and brill nest chamber；Ground slurry preparing station: as shown in Figure 1, to be arranged in southern curtain tunnel past at the ground slurry preparing station
The east of a river the Luo Ze side of Nan400mChu；The ground slurry preparing station is provided with mound field 1-1, magma pond 1-2, pulp storage tank from north orientation south
1-3, slip house 1-4, slurrying platform 1-5 and storehouse 1-6.Slip casting chamber: as shown in Figures 2 and 3, the slip casting chamber 2-11 cloth
It sets on original tunnel；Original tunnel is 110 line tunnel 2-13, and the center of the slip casting chamber 2-11 is erected to blind
Distance at the center of well shaft 2-12 is 63m, and the arrangement quantity of the slip casting chamber 2-11 is 1；The slip casting chamber 2-
11 a length of 17.2m, width 7.5m, a height of 9m；The slip casting chamber 2-11 is apart from the closer side interior shaft pit shaft 2-12
It is successively arranged 1 waterglass pond 2-7,1 clear water reserviors 2-8 and 1 stirring pool 2-9 along its length, apart from interior shaft pit shaft
The farther away side 2-12 is successively mounted with 2 grouting pump 2-10 along its length.Nest chamber is bored as shown in figure 3, the brill nest cave
Room is arranged on the circumference centered on interior shaft pit shaft (2-12)；The brill nest chamber is 3, is evenly arranged in interior shaft
On circumference centered on pit shaft (2-12)；3 brill nest chambers are respectively No. 1 brill nest (2-14), No. 2 brill nests (2-15) and No. 3 brills
Nest (2-16)；Be provided with 2 drillings in each brill nest chamber, i.e. No. 1 brill nest (2-14) has 2 drillings, respectively drilling K5 and
Drill K6, and No. 2 brill nests (2-15) have 2 drillings, and respectively drilling K3 and drilling K4, No. 3 brill nests (2-16) have 2 drillings, point
Wei not drill K1 and drilling K2；The drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 cloth hole are with blind perpendicular
On circle centered on well shaft (2-12), the interior shaft pit shaft center of circle (2-12) to drilling K1, drilling K3, drilling K4, is bored drilling K2
The distance of hole K5 and drilling K6 are 14m (cloth hole circle diameter is 28m).As shown in Figures 4 to 7, the lower part for boring nest chamber is
Rectangular parallelepiped structure, long a and width b are 9m, and high h1 is 3m；The top for boring nest chamber is truncated rectangular pyramids structure, the truncated rectangular pyramids
The long a and width b of bottom surface be 9m；The upper bottom surface of truncated rectangular pyramids is rectangle, and long c is 7m, width d is 4m；The truncated rectangular pyramids
High h2 is 13m；Along upper bottom surface width direction, the truncated rectangular pyramids section be it is trapezoidal, the angle α of trapezoidal a waist and bottom surface is
84 °, the angle β of another trapezoidal waist and bottom surface is 74 °；In each brill nest chamber: the distance of center circle f of two drilling is 3m,
The radius of each drilling is 0.64m；The horizontal distance e of long side of the centers of circle of two drilling to truncated rectangular pyramids upper bottom surface is 2m,
The horizontal distance g of a short side of the center of circle of one of drilling to truncated rectangular pyramids upper bottom surface is 1.966m, the circle of another drilling
The heart to truncated rectangular pyramids upper bottom surface another short side horizontal distance k be 2.034m；The brill nest chamber opening and brill nest contact
Road 2-3 is connected, and along upper bottom surface length direction, the truncated rectangular pyramids are trapezoidal, the folder of trapezoidal a waist and bottom surface along section
Angle γ is 83 °, another trapezoidal waist is that cambered surface is connect with the top for boring nest connecting taxiway 2-3, and the radius of cambered surface is 4m；Every
In a brill nest chamber: the neighbouring side for boring nest connecting taxiway 2-3 and the long side close to rectangular parallelepiped structure, cutting have sedimentation basin 2-
4, a length of 4m, width 1.5m, the depth 1m of sedimentation basin；It is on the outside of each brill nest chamber and opposite with the brill nest connecting taxiway 2-3
Side dig have motor chamber 2-5, the length and width and height of the motor chamber 2-5 is 2m, in the motor chamber 2-5
The heart faces the center of circle of two drilling；The cross section lower half for boring nest connecting taxiway 2-3 is rectangle, and a length of 4m, width are
1.8m, a height of 1.2m, the cross section upper half for boring nest connecting taxiway 2-3 are three fan annular compositions, the fan annular in two sides
Radius be 0.894m, the radius of intermediate fan annular is 3.044m, and the side for boring nest connecting taxiway 2-3 is provided with ditch 2-
6, the wide and deep of ditch is 0.3m.
(A-2), large-scale probing grouting equipment is delivered to grouting chamber and bores nest chamber
When ground slurry preparing station, grouting chamber and after boring nest Chamber Construction, need large-scale drilling equipment conveying
To underground.As shown in table 4, TSJ-2000 type drilling machine and 350 pump grouting pumps are that domestic go into the well for the first time is constructed, and need to find conjunction
Suitable conveying circuit and delivery method solves the problems, such as that large-scale slip casting drilling equipment is gone into the well.Large size probing grouting equipment is first disassembled
And classification selects different transportation resources then according to different classifications, and finally the large-scale probing slip casting for being transported to operating position is set
Standby assembling；
Table 4 need to be transported to the capital equipment list of underground
| Device name | Specification | Quality/kg | Quantity | Remarks |
| BQ-350 grouting pump | 4.8m*2.1m*1.5m | 5100 | 2 | |
| TSJ-2000 drilling machine | 3.88m*1.965m*1.29m | 6867 | 3 | |
| 850 slush pumps | 3.018m*1.12m*2.05m | 3100 | 3 | |
| 89 drilling rods | 9.6m | 209.2 | 300 | |
| 108 kelly of φ | 10.5m | 1000 | 3 | |
| 159 drill collar of φ | 9.45m | 1000 | 6 | |
| Boring tower | 8m*1.5m*1.5m | 5600 | 3 sections | |
| Boring tower | 7m*1.2m*1.2m | 3100 | 3 sections |
(1) dismantling and classification of grouting equipment are drilled: in order to reduce the damage of colliding with during equipment conveying, to large power drill
Grouting equipment is visited to be disassembled and classified.The probing grouting equipment include drilling machine, grouting pump, slush pump, drilling rod, drill collar and
Boring tower；Disassembled 3 chassis, the rock core machine of drilling machine and the mill of drilling machine for drilling machine of the drilling machine；The grouting pump is disassembled
Chassis, slip casting pump motor and the grouting pump pump housing of grouting pump.It is the equipment of single-piece dismantling, is divided into three classes: first kind equipment
For the big part of single-piece size, the chassis on 3 chassis and grouting pump including drilling machine；Such as the long a height of 4.8m* of * wide * of slip casting pump chassis
2.1m*0.3m；Second class equipment is single-piece is small in size but quality is big part, including slush pump, the rock core machine of drilling machine, drilling machine mill
Disk, slip casting pump motor and the grouting pump pump housing；Such as slush pump weight 3.1t, the rock core machine of drilling machine weighs 5t；Third class equipment is single
Part is elongate articles, including drilling rod, drill collar and boring tower；If common run of steel is 9.6m.
2. transferring Scheme Choice: in 910m-670m absolute altitude section, share four routes can be considered as Maoping Pb-Zn ore deposit at present
Transport decentralization channel: (1) 910 middle section 7# near coal-mine-old vertical shaft -670 haulage way -670 middle section, 114 line wears arteries and veins-slip casting
It stands, bore nest position.The analysis showed that this scheme has the disadvantage in that
1. the old middle section of vertical shaft 910 and 670 ingate position is not able to satisfy the decentralization of 8m*1.5m*1.5m boring tower；
2. 670 level haulage gallery sections are 3m*3m, track is eccentric, orbit centre to highwall minimum range 0.9m, makes somebody a mere figurehead
Line height 1.7m-2.2m is unsatisfactory for the BQ-350 grouting pump rail transport requirement of 4.8m*2.1m*1.5m；
(2) 910 middle section 7# are near coal-mine -114 line of the haulage way -670 of 2# inclined shaft -670 middle section wear arteries and veins-design slip casting station,
Nest position is bored, this scheme has the disadvantage in that
1. 2# inclined shaft section is 2.4m*2.6m, track is eccentric, and orbit centre is not able to satisfy to highwall minimum range 0.9m
The BQ-350 grouting pump rail transport requirement of 4.8m*2.1m*1.5m；
2. 670 level haulage gallery sections are 3m*3m, track is eccentric, orbit centre to highwall minimum range 0.9m, makes somebody a mere figurehead
Line height 1.6m-1.8m is unsatisfactory for the BQ-350 grouting pump rail transport requirement of 4.8m*2.1m*1.5m；
3. the 2# switching track for inclined shaft gradient is larger, it is not able to satisfy kelly decentralization transport and requires；
(3) 901 main haulage roadways -4# inclined shaft -4# inclined shaft to 670 middle section, 110 line wears arteries and veins connecting taxiway, and (trackless, nothing are uncoupled
Road) -670 110 lines of middle section-design slip casting station, nest position is bored, this scheme has the disadvantage in that 4# inclined shaft to 670 middle sections 110
Line wears arteries and veins connecting taxiway position rail-free and uncouples, and equipment and materials needs to reprint, manpower transports, time-consuming, higher cost, while shadow
It is longer to ring the Lifting Convey time；
(4) 901 112 lines of the line of main haulage roadway -112 blind combined shaft (transformation) -670 middle section-design slip casting station bore nest position
It sets, there are following advantages for this scheme, as shown in Figure 8:
1. all tunnels of the route, lifting means are all satisfied maximum package equipment and the size transport of material requires；
2. the channel is autonomous channel, the Lifting Convey that mine normally produces is not influenced；
To sum up: comprehensively considering from existing equipment hoisting power, tunnel traffic condition, the scheme " line of 901 main haulage roadways -112
Nest position is bored at blind 670 112 lines of middle section of combined shaft-- design slip casting station " it is optimal case.
3. drilling grouting equipment according to different classifications, different transportation resources is selected: since 112 line interior shaft well heads are located at
In gallery near coal-mine 650m, nearby only enough bicycle is current for gallery width for well head, and there are also continuous two 90 ° turns for gallery at well head
It is curved, it can not allow truck that equipment is directly transported to well head, be unloaded using well head simple crane beam.Equipment can only be unloaded and be put in hole
Gate material stockyard, then try to be transported to interior shaft well head.
(1) interior shaft well head: the conveyer method of first kind equipment is transported to by material stockyard are as follows: using before loading shovel
Hold scraper；One end of first kind equipment is placed in loading shovel, and the two corners of the other end are bound with wirerope respectively, by wirerope
Its other end is fixed on scraper bowl top with shackle after tension；Loading machine is lifted after scraper bowl directly by equipment scraper to interior shaft well
Mouthful；The conveyer method of second class equipment are as follows: fortune is hung using loading shovel；Second class equipment directly uses the two of a root long wirerope
End is enclosed rotating around equipment both ends one carries out bundled fixed, then will hang on loading shovel in the middle part of wirerope, after adjusting level,
Hanging equipment is directly transported to interior shaft well head；The conveyer method of third class equipment are as follows: by sledge, hauled with loading machine；First
With loading machine by third class equipment backpack to sledge, then with wirerope third class equipment is tied with sledge, to ensure to haul
Balance and stability in the process, the position that the center of gravity of all third class equipment should be slightly forward in the middle part of sledge；Then with a root long steel
The both ends of long wirerope are fixed on the dedicated fixed point of sledge front end two sides by cord from third class equipment is bypassed above, long
It is hung in the middle part of wirerope on the hook for loading drive end unit；Then sledge is hauled to interior shaft well head by loading machine；The sledge has
Steel-pipe welding forms, production method are as follows: sledge two sides are large steel pipe, and centre is welded and fixed with small steel pipe with large steel pipe, greatly
Both ends nozzle of the steel pipe by ground is made into the arc upwarped.
(2) it is transferred by interior shaft well head to 670 ingates: having complete Lifting Convey system use building 112 line interior shafts
Personnel and material transport up and down when self well digging construction, and system bearing ability meets equipment decentralization and requires.Interior shaft closure plate
Meet full-size equipment and passes through requirement.Interior shaft has dug block to 480m absolute altitude, to ensure that equipment transfers safety and personnel's operation
It is convenient, hanging scaffold is set at 670 middle section ingate ground level of pit shaft.The pay-off method of first kind equipment are as follows: use wirerope two
Head binds the two corners of the short side of first kind equipment respectively, by the big hook for hanging over lifting system in the middle part of wirerope, directly transfers
To 670 ingates；The pay-off method of second class equipment are as follows: with the both ends of a root long wirerope rotating around the second class equipment both ends one
Circle carries out bundled fixed, then by the big hook for hanging over lifting system in the middle part of wirerope, directly transfers to 670 ingates；Third
The pay-off method of class equipment are as follows: the wirerope of 6 root long 11m of establishment, 6 wirerope are each passed through the center of 6 third class equipment
After eyelet, with shackle by 6 steel wire rope head strings to together, then with the other end rope end of 6 wirerope of a root thickness steel wire penetrating
It is hung on the big hook of lifting system afterwards, third class equipment is lifted after hook and is allowed in upright stable state, then is directly transferred
To 670 ingates.
(3) it is transported to each job position: the underground high 5m of 670 ingate by 670 ingates, by simulating in advance, such as Fig. 9 and figure
Shown in 10, whether simulation handling capacity meets equipment decentralization size requirement.By simulation, the drilling rod and boring tower of third class equipment are equal
670 ingates can be passed through.First kind equipment, the second class equipment and third class equipment Transfer method: at decentralization to 670 ingates
When, electricity consumption scraper pulls the equipment bottom end of decentralization, givees a signal when pulling, slowly transfers hook, locate completely to equipment center of gravity
When in 670 ingates, hook wirerope is released；After adjusting device location and arranging wirerope, equipment is transported with scraper
To each job position.Needs are released under being transferred by interior shaft well head to 670 ingates: sequencing is assembled according to underground equipment
And space requirement arranges.The decentralization sequence of drilling machine are as follows: first transfer the chassis of 3 drilling machines, then transfer the rock core machine and mill of drilling machine
Disk finally transfers boring tower；Grouting pump decentralization sequence are as follows: first transfer grouting pump chassis, then transfer grouting pump motor and
The pump housing.
(4) equipment for being transported to each job position is assembled: slush pump: the pump housing and motor are direct using electric scraper
After transporting job position, assembled；Grouting pump: after the chassis of grouting pump is using electric scraper cross-docking job position, directly
Connect installation connection bolt；Again by the motor of the pump housing of grouting pump and grouting pump, after electricity consumption scraper cross-docking job position,
It is assembled；Drilling machine: after 3 chassis of drilling machine are using electric scraper cross-docking job position, it is mounted directly connection bolt；It bores
The assembling of the rock core machine of the mill and drilling machine of machine is hung using preassembled 16# flange beam hoisting beam at the top of nest is bored in lifting beam
The pulley of upper 10t bores nest bottom highwall and makes anchor pole jinny, and winch cable is after pulley and ties up the steel wire in equipment
Rope connection is promoted, and electric scraper, which carries out auxiliary, ensures the steady safety of equipment.
(A-3) solid pipeline section uses the full hole S directional drilling construction and slip casting section drilling operation；When probing grouting equipment is transported to
Behind operating position, injected hole can be drilled.
(1) the solid full hole the S directional drilling construction of pipeline section:
It constructs in solid pipeline section, is constructed using the directional drilling of full S-shaped hole: by drilling K1, drilling K2, drilling K3, drilling K4, being bored
Hole K5 and drilling K6 introduces drilling drop point K1 ', drilling drop point K2 ', drilling drop point K3 ', drilling drop point K4 ', drilling drop point respectively
K5 ' and drilling drop point K6 '；The drilling drop point K1 ', drilling drop point K2 ', drilling drop point K3 ', drilling drop point K4 ', drilling drop point
K5 ' and drilling drop point K6 ' on the circle centered on interior shaft pit shaft (2-12), is arrived respectively with interior shaft pit shaft (12) center of circle
Drill drop point K1 ', drilling drop point K2 ', drilling drop point K3 ', drilling drop point K4 ', drilling drop point K5 ' and drilling drop point K6 ' away from
From being 4.75m (drop point circle diameter be 9.5m)；Drill drop point K1 ', drilling drop point K2 ', drilling drop point K3 ', drilling drop point K4 ',
The distance of each adjacent drilling drop point between drop point K5 ' and the drop point K6 ' that drills that drills is 4.75m；As shown in figure 11, S-shaped drills
Track in the earth formation be it is three-dimensional, be divided into straight hole section (AB), increasing hole angle section (BC), steady tilted section (CD), drop angle section (DE)；S-shaped is bored
Shown in hole locus formula such as formula (I):
θ=arctan { (R1+R2)/[(D1-D2)2-2(R1+R2)X+X2]1/2}-arctan[(R1+R2-X)/(D2-D1)] (Ⅰ)
Wherein:
R1=57.3/Kc1；R2=57.3/Kc2；L1=30.48 γ/Kc1；L2=30.48 γ/Kc2；CD=[(D1-D2)2-2
(R1+R2)X+X2]1/2；D1 is increasing hole angle section (BC) starting point depth, that is, starts depth when directional drilling, and D2 is to become after drop angle
Depth when straight hole section, R1 are the radius of curvature of increasing hole angle section (BC), and R2 is the radius of curvature of drop angle section (DE), and θ is steady tilted section
(CD) apex angle, X are the horizontal off set of target point；Kc1、Kc2For the build angle rate of increasing hole angle section (BC) and drop angle section (DE), build angle rate
It is related with deflecting tool；L1Arc length is crept into for increasing hole angle section (BC)；L2For the drilling arc length of drop angle section (DE)；θ and CD is crucial ginseng
Number；
Drilling is crept into from workbench aperture to 50m at for straight hole section (AB), from 50m to being increasing hole angle section at 80m
(BC), directional drilling is implemented using helicoid hydraulic motor, target bearing X and vertex angle theta reach into target requirement, and vertex angle theta increases to 3.5 °, start
Steady tilted section (CD) drilling construction at m to 240m from 80 when steady tilted section (CD) creeps into 20m to 30m, implements deviational survey, real time monitoring
Injected hole consolidates pipeline section deviation data, from 240m to being drop angle section (DE) directional drilling at 254m, implements to drop using helicoid hydraulic motor
Tiltedly；
Artificial orientation's drilling generallys use mud motor to realize, mud motor general screw drilling tool.Orientation
When helicoid hydraulic motor acting surface and hole scattering face between angle be tool face azimuth, and from hole scattering face by clockwise torsion
0~180 ° is positive, and reverses 0~180 ° counterclockwise and is negative.The skew direction angle to drill before orientation adds the resulting angle in tool face azimuth
Degree is tool face angle.It will be oriented design before each directional drilling, mainly acquire tool face angle and once
Directional drilling segment length can be calculated by following equation:
γ=arccos (cos θ1cosθ2+sinθ1sinθ2cosΔα)
ω=arccos ((cos θ 1cos γ-cos θ2)/(sinθ1sinγ))
L=30.48 γ/Kc
In formula: the angle before γ-orientation after drilling track axis and orientation between drilling track axis, referred to as " dog-leg
Angle "；θ1The apex angle to drill before-orientation；θ2- directional aim apex angle；ω-tool face azimuth；Δ α --- the design side of orientation front and back
Parallactic angle increment；--- tool face angle；L --- orientation section creeps into length；Kc--- build angle rate.
Tool face angle ω can be measured by drilling direction finder.Currently, inlet well conventional machinery formula gyroscopic survey
The combination of direction finder, wired drilling instrument and wireless drilling instrument collocation helicoid hydraulic motor is oriented.Gyroscopic survey direction finder can be
It is directly measured in casing and common drilling rod.Directional tool (wired or wireless) mostly uses magnetic principle to carry out azimuthal measurement,
Need geomagnetic field environment, when orientation cannot carry out in casing and common drilling rod, need to be equipped with non magnetic drill collar, there is magnetic disturbance
In the environment of be also not suitable for.This construction is oriented construction using gyroscopic survey direction finder, as shown in table 5.
5 orientation device key points for operation of table
Drilling solid pipeline section using Φ 133mm drill bit drilling after use Φ 215.9mm drill bit reaming, then descend Φ 168 ×
7mm seamless steel casing is managed admittedly；In solid pipeline section, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 are flat from work
Platform 0m is crept into 254m, and drilling depth is 254m.
(2) slip casting section is constructed: since pit shaft has been constructed to about 481m absolute altitude, being required according to design document and work surveys drilling in fact
Border discloses situation, it is desirable that casing need to be located in stable basement rock, and it is more than pit shaft projected depth at least 10m (this that slip casting, which terminates depth,
It is secondary to take 20m).It designs slip casting hole depth 750m (absolute altitude 670m--80m), slip casting start-stop depth is that (absolute altitude 416m is extremely by 254m-750m
Absolute altitude -80m), a length of 496m of slip casting block.As shown in table 6.
6 maos of level ground mines of table, 112 line interior shaft pit shaft pre-pouring grout hole design parameter table
K1, the K3 and K5 that drills that drills drill as a sequence hole, K2, K4 and K6 are two sequence holes, and the drilling of two sequences can be according to a sequence
Drilling construction situation adjusts accordingly, while can make preliminary assessment to the slip casting effect of a sequence drilling construction.Drill K1, brill
Hole K2, drilling K3, drilling K4, drilling K5 and drilling K6, drilling depth is as follows, is specifically shown in Table 7: at rock cap end, the K1 that drills, drilling
K2, drilling K3, drilling K4, drilling K5 and drilling K6 are crept into from absolute altitude 254m to 274m, and creeping into segment length is 20m；First
Slip casting section, drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 are crept into from absolute altitude 274m to 330m, drilling
Segment length is 56m；In the second slip casting section, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 are from absolute altitude
330m is crept into 405m, and creeping into segment length is 75m；In third slip casting section, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling
K5 and drilling K6 are crept into from absolute altitude 405m to 474m, and creeping into segment length is 69m；In the 4th slip casting section, the K1 that drills, drilling K2,
Drilling K3, drilling K4, drilling K5 and drilling K6 are crept into from absolute altitude 474m to 550m, and creeping into segment length is 76m；In the 5th note
Section is starched, drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 are crept into from absolute altitude 550m to 628m, creep into section
Length is 78m；In the 6th slip casting section, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 are from absolute altitude 628m
For drilling to 710m, creeping into segment length is 82m；In the 7th slip casting section, the K1 that drills is crept into from absolute altitude 710m to 756.7m, creeps into segment length
It is 46.7；Drilling K2 is crept into from absolute altitude 710m to 757.28m, and creeping into segment length is 47.28；Drilling K3 from absolute altitude 710m creep into
755.13m, drilling segment length are 45.13；Drilling K4 is crept into from absolute altitude 710m to 759.01m, and creeping into segment length is 49.01；Drill K5
It creeps into from absolute altitude 710m to 755.49m, creeping into segment length is 45.49；Drilling K6 is crept into from absolute altitude 710m to 756.55m, creeps into section
A length of 46.55.
7 pore-creating bill of quantities of table
| Project | K1 | K2 | K3 | K4 | K5 | K6 | It is total |
| Gu pipeline section/m | 254 | 254 | 254 | 254 | 254 | 254 | 1524 |
| Slip casting section/m | 502.7 | 503.28 | 501.13 | 505.01 | 501.49 | 502.55 | 3016.16 |
| Complete opening depth/m | 756.7 | 757.28 | 755.13 | 759.01 | 755.49 | 756.55 | 4540.16 |
Slip casting section implements straight hole section drilling construction, implements slip casting section straight hole well straightening work using 7LZ95 helicoid hydraulic motor.Such as figure
Shown in 12, it is desirable that drilling maximum deflection rate is not more than 3 ‰, and each hole section distribution of boreholes general uniform.It is being crept by technical requirements
Deviational survey, orientation works are carried out according to drilling situation in time in the process, preferably control the deflection of drilling, maximum deflection rate is about
2.82 ‰, each hole scattering situation meets the requirements, and each slip casting section piece slope that respectively drills is shown in Table table 17 to table 22.
(B) mortar depositing construction: drilling starts to carry out segmenting slip casting after constructing it is necessary to the slip casting section to each drilling.
(B-1) preparation of injecting paste material: single liquid cement slurry
The list liquid cement slurry is that salt and triethanolamine are added in cement slurry；The volume of the addition clear water of the cement slurry
It is 0.5-1.5:1 with the mass ratio that cement is added；The additional amount of salt is the 0.05% of cement additional amount, the addition of triethanolamine
Amount is the 0.005% of cement additional amount；
The list liquid cement slurry the preparation method comprises the following steps: level-one stirring pool is added in clear water after, utilize automatic charging and metering
Cement in bulk cement tank is quantitatively adding level-one stirring pool by system, after being sufficiently stirred, transfers to second level stirring pool；In underground
Salt, triethanolamine are quantitatively adding using metering system in the indoor stirring pool of slip casting cave (2-9), after being sufficiently stirred to get
Single liquid cement slurry；
Clay cement slurry, selection parameter and requirement are as shown in figure 13.The selection of 1 clay material
Since clay cement slurry water plugging property is significantly better than single liquid cement slurry slurry, show as the property infused is good, syneresis rate is low,
Moisture extraction rate is small, and calculus rate is high, and the syneresis rate for 24 hours of clay cement slurry is generally less than 2%.According to incompletely statistics, from coal science
Total institute's shaft building research branch is studied after the 1990s year introduces clay cement slurry from the former Soviet Union, clay cement slurry is at home
It is successfully applied in 109 shaft of vertical well pre-pouring grouts.According to the geology and the hydrology to 112 line interior shaft regions
Analysis, rock grouting section mainly use clay cement slurry, Gu pipe and rock cap slip casting section, crushed zone are reinforced mainly using single liquid cement
Slurry.As needed, local crushed zone, caving ground use clay cement slurry+mono- liquid cement slurry synthetic jet grouting method.Clay water
Mud is CL-C type clay cement slurry, is to add a small amount of cement and waterglass using clay slurry as main component and be formulated
Multiphase suspended substance.To reach expected water blockoff target, need to select novel slurry filling material, in line with injecting paste material adaptation to local conditions, warp
The applicable construction principle of Ji, my company have carried out a large amount of investigation on mine periphery, and searching may be as the great soil group of slurry material
Substance simultaneously reconnoitres its preservation amount.Such as admaic earth, Zhaotong taupe clay, coal slime great soil group substance.As shown in table 8.
Table 8
Pass through the summary of previous experiences, the requirement of clay are as follows: the granularity of the clay in the clay slurry be less than
The clay of the particle of 0.005mm is more than or equal to the 25wt% of clay gross mass；The granularity of the sand of clay be greater than 0.075mm and
The content of sand less than 20.0mm is less than or equal to the 5% of clay gross mass；The plasticity index of clay is greater than 10；Organic matter in clay
Content is less than the 3wt% of clay gross mass.Pass through clay granularity, sand content, the plasticity of the sample to clay No. 1 to clay 8
The analysis of the content of organic matter in index and clay, it is final to determine that clay No. 1 and clay 2 is implemented for 112 line interior shaft pit shafts
The clay material that pre-pouring grout is harnessed the river.The grain size distribution of the clay 1 are as follows: clay of the granularity less than 0.002mm accounts for clay 1 always
Quality 25.8%, granularity is more than or equal to 0.002mm and the clay less than 0.005mm accounts for the 4.9% of No. 1 gross mass of clay, granularity
Clay more than or equal to 0.005mm and less than 0.050mm accounts for the 17.2% of No. 1 gross mass of clay, and granularity is more than or equal to
0.050mm and the 52.1% of No. 1 gross mass of clay is accounted for less than the clay of 0.075mm；The plasticity index of the clay 1 is
26.8；Content of organics in the clay 1 is less than the 3wt% of clay gross mass.The grain size distribution of the clay 2 are as follows:
Clay of the granularity less than 0.002mm accounts for No. 1 gross mass 17.7% of clay, and granularity is more than or equal to 0.002mm and is less than 0.005mm
Clay account for the 11.2% of No. 1 gross mass of clay, granularity is more than or equal to 0.005mm and the clay less than 0.050mm accounts for clay 1
The 48.4% of number gross mass, granularity is more than or equal to 0.050mm and the clay less than 0.075mm accounts for No. 1 gross mass of clay
22.7%；The plasticity index of the clay 2 is 42.5；Content of organics in the clay 2 is less than clay gross mass
3wt%.
2. the preparation of clay slurry: as shown in figure 14.Using high-pressure water jet clay, preliminary clay slurries are formed, then will
Preliminary clay slurries desanding, is carried out levigate by pulper, obtains clay slurry, is put into storage in pulp storage tank.It is obtained glutinous
The density of soil paste is 1.12 × 103~1.24 × 103kg/m3.The viscosity of obtained clay slurry is 17.76~18.34s.
3. the preparation of clay cement slurry: the graininess grouting for water blocking material is CL-C type clay cement slurry, shown particle
Property grouting for water blocking material is made of clay slurry, cement and additive.The additive is waterglass, and the modulus of the waterglass is
2.8-3.4, the concentration of the waterglass are 38-42 Baume degrees.The intensity of the cement is more than or equal to 42.5, and cement granularity is greater than
80 μm of cement content is less than or equal to 5%.Graininess grouting for water blocking material: the proportion of CL-C type clay cement grout, with 1m3
The content of each component indicates in slurries, and component parameter range is as follows: clay pulp density: 1.12 × 103~1.24 × 103kg/m3；
Cement additional amount: 50~300kg/m3；Waterglass additional amount: 2~40L/m3.The preparation method of graininess grouting for water blocking material
Are as follows: the clay slurry of preparation is pumped to level-one stirring pool using slush pump, is sufficiently stirred, and be adjusted to required density；Using certainly
It moves feeding and metering system and the cement in bulk cement tank is quantitatively adding level-one stirring pool, after being sufficiently stirred, transfer to second level
Stirring pool；Additive is quantitatively adding second level stirring pool using metering system, to get graininess grouting for water blocking material after being sufficiently stirred
Material.
Clay cement slurry property discussion: (a) density: density is related with solid contents in slurries, material body in suspension
Long-pending and its quality has additivity, i.e. the sum of cement, clay slurry, waterglass volume is clay grout volume.
The density of clay cement slurry such as following formula:
In formula: ρ --- type clay cement slurry density, t/m3；ρn--- clay pulp density, t/m3；Wc--- cement quality,
t；ρc--- the density of cement, t/m3；Vs--- waterglass volume, m3, because of V when scene calculatessValue is smaller, can be ignored；
ρs--- waterglass density, t/m3；V --- clay grout volume, m3。
It is 1.15 × 10 by the density of calculating and actual measurement clay cement slurry3~1.33 × 103kg/m3。
(b) stability: CL-C type clay cement slurry is a kind of suspension, and clay particle is smaller, dispersion degree with higher,
In addition the hydration of waterglass and cement, the particulate in suspension accounts for larger proportion, keeps the stability of clay cement slurry obvious
Better than single liquid cement slurry, show as that syneresis rate is low, moisture extraction rate is small, the syneresis rate for 24 hours of clay cement slurry is respectively less than 3%, meets
It is required that as shown in table 9.
The syneresis rate of 9 clay cement slurry of table
(c) plastic strength: plastic strength is the anti-shear ability for characterizing slurries plasticity concrement in process of setting, generally
It is chiefly used in evaluating water blockoff injecting paste material.It is easily washed away or crowded if slurries anti-shear ability is inadequate under effect of water pressure
Out, it causes slurries to be lost, deleterious effect can all be generated to slip casting effect and cost, so this index of plastic strength is to water blockoff
Engineering is particularly significant.Plastic strength changing rule is studied, the rheological property of slurries can be understood indirectly.In mortar depositing construction, by
It is different in CL-C type clay cement grout curing rate, so often understanding the rheological characteristic of CL-C slurry by the measurement of plastic strength
Can, and according to factors such as grouting pressure, flow, rock stratum situations, select the slurries of different ratio.Table 10 is clay cement slurry plasticity
The influence factor list of intensity, by table 10 it is found that influence plastic strength factor, mainly have waterglass dosage, cement consumption,
Clay pulp density and environment temperature etc., it is generally maximum with the influence of waterglass, it, can be by just when carrying out slurry formula test
Test is handed over, the influence situation of each factor is analyzed, shoots the arrow at the target when adjusting grout coordinate ratio, it is more scientific and reasonable.
The influence factor of 10 clay cement slurry plastic strength of table
| Factor | Influence situation |
| Serum density | Clay pulp density is bigger, and plastic strength is higher |
| Cement consumption | Cement consumption is bigger, and plastic strength is higher |
| Water glass content | Water glass content is bigger, and early period (1~3d) plastic strength is higher |
| Cement type and grade | Strength of cement grade is higher, and plastic strength is bigger.Portland cement, ordinary portland cement are better than other cement. |
| Temperature | Temperature is higher, and plastic strength increases faster |
| Mixing time | The mixing time for preparing clay cement slurry should be controlled in 30min, more than will reduce plastic strength |
We have studied clay pulp density, cement consumption and waterglass dosage to the shadow of clay cement slurry plastic strength respectively
It rings.The influence of clay density: being 36.5 in clay plasticity index, cement consumption 1m3100kg is starched, waterglass additional amount is 1m3
When starching 20L, as shown in Figure 15 and table 11, with the increase of clay density, the plastic strength of clay cement slurry is gradually increased
Influence of the 11 clay pulp density of table to clay cement slurry plastic strength
The influence of cement consumption: being 36.5 in clay plasticity index, clay density is 1.15 × 103kg/m3, waterglass adds
Entering amount is 1m3When starching 20L, as shown in table 12 and Figure 16, with the increase of cement consumption, the plastic strength of clay cement slurry by
It is cumulative strong, especially when cement additional amount is 1m3When clay cement slurry 200kg, the plastic strength of clay cement slurry significantly increases
By force.
Influence of 12 cement consumption of table to clay cement slurry plastic strength
The influence of waterglass dosage: being 36.5 in clay plasticity index, clay density is 1.15 × 103kg/m3, cement
Additional amount is 1m3When starching 100kg, as shown in table 13 and Figure 17, as the additional amount of waterglass increases, the modeling of clay cement slurry
Property intensity gradually increases.
Influence of 13 Water glass content of table to clay cement slurry plastic strength
(d) viscosity: taking place after clay, cement and structural additives waterglass in clay cement slurry are stirred
Reaction is learned, the viscositys of clay cement slurry slurries becomes larger with the time, its initial viscosity of general measure, and the size of viscosity influences slurries
Diffusion length.The viscosity of clay cement slurry is measured with funnel viscosity meter.The clay cement slurry being made into using clay, density are sticked
Degree measurement is shown in Table 14.
14 clay cement slurry density of table, viscosity measurement result table
(e) setting percentage: under atmospheric pressure, the syneresis rate during clay water sludge consolidating is smaller, but during slip casting
Certain dehydration can occur under larger grouting pressure for slurries, this test indoors and the detection of live sample in channel syndrome
It is bright.The dehydration of slurries is good to the filling in crack and the intensity of Seed harvest.
Table 15 is to analyze result to the density measurement of 112 line interior shaft mine pre grouting from the surface Seed harvest coring samples.
The density of clay cement slurry is 1.343g/cm3, calculus rate is calculated by 95% under normal pressure state, and calculus volume density is answered
For 1.414g/cm3(calculation method 1.343/95%=1.414g/cm3).But the practical Seed harvest in underground it can be seen from table
Density is up to 1.765g/cm3, minimum 1.646g/cm3, hence it is evident that higher than the density (1.414g/cm under normal pressure state3), knot
Real rate is that clay cement slurry has apparent dehydration densification phenomenon during in-situ consolidation.
15 pre grouting from the surface Seed harvest density measurement analytical table of table
Chemical pulp: the chemical pulp is made of waterglass and gelling agent, and the volume ratio of the waterglass and gelling agent is
3.89-4:1。
(B-2) pressure water is tested before first carrying out slip casting, is then adjusted injecting paste material, is carried out segmenting slip casting, reach each section of note
Pressure is starched, grouting and water-proof work is completed；In each slip casting section, note should be answered when once grouting cannot reach design requirement, it is multiple to infuse
Interval time should be greater than being equal to 12h.As shown in table 16, drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and the K6 that drills are each
Section design grouting pressure are as follows: rock cap section final grouting pressure be 7.6-10.1MPa, be in the final grouting pressure of the first slip casting section
11.2-16.8MPa is 12.7-19.1MPa in the final grouting pressure of the second slip casting section, is in the final grouting pressure of third slip casting section
14.1-21.1MPa is 15.6-23.4MPa in the final grouting pressure of the 4th slip casting section, is in the final grouting pressure of the 5th slip casting section
17.2-25.7MPa is 18.8-28.2MPa in the final grouting pressure of the 6th slip casting section, is in the final grouting pressure of the 7th slip casting section
19.7-29.55MPa。
16 bored grouting section height of table divides and final grouting pressure value list
Such as the slip casting flow chart that Figure 18 and Figure 19 is single liquid cement slurry and clay cement slurry.Drill K1, drilling K2, drilling
K3, drilling K4, drilling K5 and each section of K6 specific grouting amount of drilling and grouting pressure are shown in Table 17 to table 22.
Gu pipeline section slip casting: when casing section is constructed, after drilling to 254m, using Φ 133mm drill bit instead and continue to be drilled down into 1.0
~2.0m, with deposition hole Nei Yan, native break flour；Then Φ 168 × 7mm seamless steel pipe is descended, after casing is down toward 254m, in casing
Interior lower stop grouting plug, stop grouting plug is down toward sleeve bottom, at 3~4m of bottom, is first pumped clear water with slip casting, checks only slurry effect, hole
If interior return water phenomenon, Ying Qisai is again lower to be filled in, until not returning water；In Drive stroke, casing outer rim hole wall returns water
Phenomenon injects single liquid cement slurry to after clarifying wait return water, after casing outer rim returns out single liquid cement slurry, i.e. stopping slip casting, then it is fixed
Amount indentation clear water；It is filled in from 6~8 hours, is scanned out after 12 hours in casing away from the cement slurry on 1.0~1.5m of bottom, continue maintenance 24
~36 hours, packer permeability test was greater than 2MPa in casing, did not returned water outside casing, Gu pipe terminates；Drill K1, drilling K2, drilling K3,
Drilling K4, the K5 and drilling K6 that drills are 10m in the volume that solid pipeline section enters single liquid cement slurry3, the wherein additional amount of cement
10.91t, the additional amount of salt are 54.6kg, and the additional amount of triethanolamine is 5.4kg；
In rock cap section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject single liquid cement slurry；
Drilling K1 is 9.12m in the volume of the single liquid cement slurry of injection of rock cap section3, wherein the additional amount of cement is 4.94t, and salt adds
Entering amount is 24.38kg, and the additional amount of triethanolamine makes grouting pressure reach 7.3MPa, completes for 2.442kg by 2 slip casting
Slip casting of the drilling K1 in rock cap section；Drilling K2 is 3.465m in the volume of the single liquid cement slurry of injection of rock cap section3, wherein cement
Additional amount is 2.63t, and the additional amount of salt is 13.167kg, and the additional amount of triethanolamine is 1.386kg, by 1 slip casting,
So that grouting pressure is reached 15.2MPa, completes drilling K2 in the slip casting of rock cap section；Injection list liquid cement slurry of the drilling K3 in rock cap section
Volume be 4.06m3, wherein the additional amount of cement is 3.157t, and the additional amount of salt is 15.98kg, the addition of triethanolamine
Amount is 1.689kg, by 1 slip casting, grouting pressure is made to reach 10.3MPa, completes drilling K3 in the slip casting of rock cap section；
Drilling K4 is 3.96m in the volume of the single liquid cement slurry of injection of rock cap section3, wherein the additional amount of cement be
3.006t, the additional amount of salt are 15.048kg, and the additional amount of triethanolamine makes slip casting pressure by 1 slip casting for 1.584kg
Power reaches 13.8MPa, completes drilling K4 in the slip casting of rock cap section；Drilling K5 is in the volume of the single liquid cement slurry of injection of rock cap section
9.13m3, wherein the additional amount of cement is 5.6t, and the additional amount of salt is 27.796kg, and the additional amount of triethanolamine is
2.842kg makes grouting pressure reach 10.0MPa by 2 slip casting, completes drilling K5 in the slip casting of rock cap section；Drilling K6 exists
The volume of the single liquid cement slurry of the injection of rock cap section is 3.069m3, wherein the additional amount of cement is 2.329t, and the additional amount of salt is
11.662kg, the additional amount of triethanolamine are that 1.228kg passes through 1 slip casting, so that grouting pressure is reached 12.7MPa, complete drilling
Slip casting of the K6 in rock cap section；In the first slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 are infused
Enter clay cement slurry:
Drilling K1 is 143.46m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
14.346t, the additional amount of waterglass are 1434.6L, by 2 slip casting, grouting pressure are made to reach 20.0MPa, complete drilling K1
It works in the slip casting of the first slip casting section；
Drilling K2 is 14.59m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
2.189t, the additional amount of waterglass are 87.54L, by 1 slip casting, grouting pressure are made to reach 17.2MPa, complete drilling K2 and exist
The slip casting of first slip casting section works；
Drilling K3 is 59.77m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
5.977t, the additional amount of waterglass are 597.7L, by 2 slip casting, grouting pressure are made to reach 20.0MPa, complete drilling K3 and exist
The slip casting of first slip casting section works；
Drilling K4 is 17.36m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
2.604t, the additional amount of waterglass are 104.16L, by 1 slip casting, grouting pressure are made to reach 17.6MPa, complete drilling K4 and exist
The slip casting of first slip casting section works；
Drilling K5 is 140.11m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
16.52t, the additional amount of waterglass are 1401.1L, by 2 slip casting, grouting pressure are made to reach 20.0MPa, complete drilling K4 and exist
The slip casting of first slip casting section works；
Drilling K6 is 10.86m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
1.629t, the additional amount of waterglass are 65.16L, by 1 slip casting, grouting pressure are made to reach 17.5MPa, complete drilling K6 and exist
The slip casting of first slip casting section works；
In the second slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement
Slurry:
Drilling K1 is 9.05m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement be
0.91t, the additional amount of waterglass are 27.15L, by 1 slip casting, grouting pressure are made to reach 17.5MPa, complete drilling K1 the
The slip casting of two slip casting sections works；
Drilling K2 is 22.26m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement be
3.34t, the additional amount of waterglass are 133.56L, by 1 slip casting, grouting pressure are made to reach 18.6MPa, complete drilling K2 and exist
The slip casting of second slip casting section works；
Drilling K3 is 30.13m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement be
3.014t, the additional amount of waterglass are 90.39L, by 1 slip casting, grouting pressure are made to reach 18.5MPa, complete drilling K3 and exist
The slip casting of second slip casting section works；
Drilling K4 is 18.59m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement be
2.789t, the additional amount of waterglass are 111.54L, by 1 slip casting, grouting pressure are made to reach 21.7MPa, complete drilling K4 and exist
The slip casting of second slip casting section works；
Drilling K5 is 25.07m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement be
2.507t, the additional amount of waterglass are 180.35L, by 2 slip casting, grouting pressure are made to reach 20.0MPa, complete drilling K5 and exist
The slip casting of second slip casting section works；
Drilling K6 is 14.33m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement be
2.15t, the additional amount of waterglass are 85.98L, by 1 slip casting, grouting pressure are made to reach 18.8MPa, complete drilling K6 the
The slip casting of two slip casting sections works；
In third slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement
Slurry:
Drilling K1 is 484.38m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
66.137t, the additional amount of waterglass are 3025.79L, by 2 slip casting, grouting pressure are made to reach 17.6MPa, complete drilling K1
It works in the slip casting of third slip casting section；
Drilling K2 is 36.32m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
5.448t, the additional amount of waterglass are 217.92L, by 1 slip casting, grouting pressure are made to reach 21.7MPa, complete drilling K2 and exist
The slip casting of third slip casting section works；
Drilling K3 is 311.48m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
37.499t, the additional amount of waterglass are 1496.24L, by 2 slip casting, grouting pressure are made to reach 17.8MPa, complete drilling K3
It works in the slip casting of third slip casting section；
Drilling K4 is 40.32m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
6.048t, the additional amount of waterglass are 241.92L, by 1 slip casting, grouting pressure are made to reach 23.2MPa, complete drilling K4 and exist
The slip casting of third slip casting section works；
Drilling K5 is 695.48m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
89.993t, the additional amount of waterglass are 4471.12L, by 4 slip casting, grouting pressure are made to reach 17.3MPa, complete drilling K5
It works in the slip casting of third slip casting section；
Drilling K6 is 21.94m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
3.291t, the additional amount of waterglass are 131.46L, by 1 slip casting, grouting pressure are made to reach 21.1MPa, complete drilling K6 and exist
The slip casting of third slip casting section works；
In the 4th slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement
Slurry:
Drilling K1 is 115.05m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement be
7.02t, the additional amount of waterglass are 230.1L, by 2 slip casting, grouting pressure are made to reach 21.2MPa, complete drilling K1 the
The slip casting of four slip casting sections works；
Drilling K2 is 39.94m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement be
5.991t, the additional amount of waterglass are 239.64L, by 1 slip casting, grouting pressure are made to reach 23.3MPa, complete drilling K2 and exist
The slip casting of 4th slip casting section works；
Drilling K3 is 100.78m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement be
7.796t, the additional amount of waterglass are 264.03L, by 2 slip casting, grouting pressure are made to reach 20.0MPa, complete drilling K3 and exist
The slip casting of 4th slip casting section works；
Drilling K4 is 42.39m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement be
6.36t, the additional amount of waterglass are 254.34L, by 1 slip casting, grouting pressure are made to reach 23.3MPa, complete drilling K4 and exist
The slip casting of 4th slip casting section works；
Drilling K5 is 126.48m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement be
10.096t, the additional amount of waterglass are 308.24L, by 3 slip casting, grouting pressure are made to reach 21.5MPa, complete drilling K5
It works in the slip casting of the 4th slip casting section；
Drilling K6 is 86.12m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement be
14.966t, the additional amount of waterglass are 680.56L, by 2 slip casting, grouting pressure are made to reach 23.2MPa, complete drilling K6
It works in the slip casting of the 4th slip casting section；
In the 5th slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement
Slurry:
Drilling K1 is 38.92m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement be
1.946t, the additional amount of waterglass are 77.84L, by 2 slip casting, grouting pressure are made to reach 24.0MPa, complete drilling K1 and exist
The slip casting of 5th slip casting section works；
Drilling K2 is 29.57m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement be
5.751t, the additional amount of waterglass are 282.66L, by 2 slip casting, grouting pressure are made to reach 23.0MPa, complete drilling K2 and exist
The slip casting of 5th slip casting section works；
Drilling K3 is 19.91m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement be
0.996t, the additional amount of waterglass are 39.82L, by 2 slip casting, grouting pressure are made to reach 22.8MPa, complete drilling K3 and exist
The slip casting of 5th slip casting section works；
Drilling K4 is 25.67m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement be
3.85t, the additional amount of waterglass are 154.02L, by 1 slip casting, grouting pressure are made to reach 21.2MPa, complete drilling K4 and exist
The slip casting of 5th slip casting section works；
Drilling K5 is 40.73m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement be
4.616t, the additional amount of waterglass are 81.46L, by 3 slip casting, grouting pressure are made to reach 24.0MPa, complete drilling K5 and exist
The slip casting of 5th slip casting section works；
Drilling K6 is 125.53m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement be
20.943t, the additional amount of waterglass are 922.54L, by 4 slip casting, grouting pressure are made to reach 25.2MPa, complete drilling K6
It works in the slip casting of the 5th slip casting section；
In the 6th slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement
Slurry:
Drilling K1 is 3555.86m in the volume of the injection clay cement slurry of the 6th slip casting section3, the wherein additional amount of cement
Additional amount for 695.891t, waterglass makes grouting pressure reach 22.6MPa for 33669.69L by 9 slip casting, completes
The K1 that drills works in the slip casting of the 6th slip casting section；
Drilling K2 is 121.91m in the volume of the injection clay cement slurry of the 6th slip casting section3, wherein the additional amount of cement be
18.282t, the additional amount of waterglass are 731.46L, by 2 slip casting, grouting pressure are made to reach 25.2MPa, complete drilling K2
It works in the slip casting of the 6th slip casting section；
Drilling K3 is 4281.26m in the volume of the injection clay cement slurry of the 6th slip casting section3, the wherein additional amount of cement
Additional amount for 709.958t, waterglass makes grouting pressure reach 22.4MPa for 26533.015L by 9 slip casting, completes
The K3 that drills works in the slip casting of the 6th slip casting section；
Drilling K4 is 109.45m in the volume of the injection clay cement slurry of the 6th slip casting section3, wherein the additional amount of cement be
16.414t, the additional amount of waterglass are 656.7L, by 2 slip casting, grouting pressure are made to reach 24.0MPa, complete drilling K4 and exist
The slip casting of 6th slip casting section works；
Drilling K5 is 1589.61m in the volume of the injection clay cement slurry of the 6th slip casting section3, the wherein additional amount of cement
For 335.489t, the additional amount of waterglass is 27803.9L, by 3 slip casting, grouting pressure is made to reach 21.8MPa, completes to bore
Hole K5 works in the slip casting of the 6th slip casting section；
Drilling K6 is 42.07m in the volume of the injection clay cement slurry of the 6th slip casting section3, wherein the additional amount of cement be
6.31t, the additional amount of waterglass are 252.42L, by 1 slip casting, grouting pressure are made to reach 25.4MPa, complete drilling K6 and exist
The slip casting of 6th slip casting section works；
In the 7th slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement
Slurry:
Drilling K1 is 66.579m in the volume of the injection clay cement slurry of the 7th slip casting section3, wherein the additional amount of cement be
9.988t, the additional amount of waterglass are 399.45L, by 2 slip casting, grouting pressure are made to reach 23.4MPa, complete drilling K1 and exist
The slip casting of 7th slip casting section works；
Drilling K2 is 122.87m in the volume of the injection clay cement slurry of the 7th slip casting section3, wherein the additional amount of cement be
18.432t, the additional amount of waterglass are 737.22L, by 2 slip casting, grouting pressure are made to reach 27.1MPa, complete drilling K2
It works in the slip casting of the 7th slip casting section；
Drilling K3 is 102.259m in the volume of the injection clay cement slurry of the 7th slip casting section3, the wherein additional amount of cement
For 15.339t, the additional amount of waterglass is 613.6L, by 2 slip casting, grouting pressure is made to reach 23.2MPa, completes drilling K3
It works in the slip casting of the 7th slip casting section；
Drilling K4 is 76.79m in the volume of the injection clay cement slurry of the 7th slip casting section3, wherein the additional amount of cement be
8.946t, the additional amount of waterglass are 372.54L, by 2 slip casting, grouting pressure are made to reach 26.3MPa, complete drilling K4 and exist
The slip casting of 7th slip casting section works；
Drilling K5 is 1912.215m in the volume of the injection clay cement slurry of the 7th slip casting section3, the wherein additional amount of cement
For 485.955t, the additional amount of waterglass is 29561.5L, by 3 slip casting, grouting pressure is made to reach 24.0MPa, completes to bore
Hole K5 works in the slip casting of the 7th slip casting section；
Drilling K6 is 39.36m in the volume of the injection clay cement slurry of the 7th slip casting section3, wherein the additional amount of cement be
5.904t, the additional amount of waterglass are 236.16L, by 1 slip casting, grouting pressure are made to reach 26.7MPa, complete drilling K6 and exist
The slip casting of 7th slip casting section works；
Then multiple note is carried out to drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6, multiple note injection is
Clay cement slurry:
The volume that drilling K1 injects clay cement slurry again is 24.5m3, wherein the additional amount of cement is 3.675t, water glass
The additional amount of glass is 147L, by 1 slip casting, grouting pressure is made to reach 21.0MPa, completes the slip casting work of drilling K1；
The volume that drilling K2 injects clay cement slurry again is 54.013m3, wherein the additional amount of cement is 10.808t, water
The additional amount of glass is 540.2L, by 2 slip casting, grouting pressure is made to reach 17.1MPa, completes the slip casting work of drilling K2；
The volume that drilling K3 injects clay cement slurry again is 39.419m3, wherein the additional amount of cement is 5.913t, water
The additional amount of glass is 236.5L, by 1 slip casting, grouting pressure is made to reach 19.1MPa, completes the slip casting work of drilling K3；
Drilling K4 is 72.055m in the volume of multiple note injection clay cement slurry3, wherein the additional amount of cement is 14.411t,
The additional amount of waterglass is 720.6L, by 2 slip casting, grouting pressure is made to reach 18.2MPa, completes the Cementer of drilling K4
Make；
The volume for the injection clay cement slurry that drilling K5 is infused again is 34.574m3, wherein the additional amount of cement is 5.186t,
The additional amount of waterglass is 207.4L, by 1 slip casting, grouting pressure is made to reach 19.8MPa, completes the Cementer of drilling K5
Make；
The volume that drilling K6 injects clay cement slurry again is 58.008m3, wherein the additional amount of cement is 11.601t, water
The additional amount of glass is 580.1L, by 2 slip casting, grouting pressure is made to reach 18.4MPa, completes the slip casting work of drilling K6；
Sealing of hole finally is carried out to drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6, sealing of hole injection is
Single liquid cement slurry:
The volume that the K1 sealing of hole that drills injects single liquid cement slurry is 14.7m3, wherein the additional amount of cement is 11.157t, salt
Additional amount be 55.86kg, the additional amount of triethanolamine is 5.88kg, completes the sealing of hole work of drilling K1；
The volume that the K2 sealing of hole that drills injects single liquid cement slurry is 14.5m3, wherein the additional amount of cement is 11.01t, salt
Additional amount be 55.1kg, the additional amount of triethanolamine is 5.8kg, completes the sealing of hole work of drilling K2；
The volume that the K3 sealing of hole that drills injects single liquid cement slurry is 14.21m3, wherein the additional amount of cement is 10.785t, food
The additional amount of salt is 53.998kg, and the additional amount of triethanolamine is 5.684kg, completes the sealing of hole work of drilling K3；
The volume that the K4 sealing of hole that drills injects single liquid cement slurry is 14.1m3, wherein the additional amount of cement is 10.71t, salt
Additional amount be 53.62kg, the additional amount of triethanolamine is 5.64kg, completes the sealing of hole work of drilling K4；
The volume that the K5 sealing of hole that drills injects single liquid cement slurry is 14.4m3, wherein the additional amount of cement is 10.93t, salt
Additional amount be 54.72kg, the additional amount of triethanolamine is 5.76kg, completes the sealing of hole work of drilling K5；
The volume that the K6 sealing of hole that drills injects single liquid cement slurry is 14.6m3, wherein the additional amount of cement is 11.08t, salt
Additional amount be 55.48kg, the additional amount of triethanolamine is 5.48kg, completes the sealing of hole work of drilling K6.
17 hole K1 slip casting situation summary sheet of table
18 hole K2 slip casting situation summary sheet of table
19 hole K3 slip casting situation summary sheet of table
20 hole K4 slip casting situation summary sheet of table
21 hole K5 slip casting situation summary sheet of table
22 hole K6 slip casting situation summary sheet of table
Since 112 interior shaft ground water anomalies are abundant, and hydrogeologic condition is extremely complex, more during drilling prospecting
A drilling discloses artesian water, and drilling water burst accident occurs.In drilling to the 6th slip casting section, water yield increases suddenly or gradually increases
Greatly to 10m3/ h or more, therefore have adjusted in slip casting section drilling rate of penetration between drilling tool, drilling mud and each hole and not
The mode of same drilling alternating slip casting, which is realized, passes through.
In drilling to the 6th slip casting section, high artesian stratum is encountered, water yield increases suddenly or is gradually increased to 10m
3/h or more, by adjusting drilling tool, adjust drilling mud, the mode of the drilling progress that is staggered and different drilling alternately slip casting is realized
It passes through, needs with the following method:
Adjust drilling tool: using the drill assembly aggravated, aggravating drill assembly gross mass is more than 10t, the drilling tool of the exacerbation
Combination includes drilling rod and drill collar；The drilling rod is by 2 73 heavy weight drill pipes, 1 89 drilling rod of 35 73 drilling rods of lower part and top
Composition, the drill collar are 2 73 drill collars；
Adjustment drilling mud: drilling mud is done using the clay magma of higher concentration, while barite ingredient is added, is reached
Increase mud balance, balance the effect of underground water hydraulic pressure, controls bore flooding quantity；The relative density of the drilling mud is according to formula
(II) it obtains:
In formula: H is height of the issue to aperture in hole, m；P is aperture water burst pressure, MPa；P0For from issue to hole
The pressure loss that mouth flushing liquor returns along annular gap, MPa；ρWaterFor the density of water, 1000kg/m is taken3；
Taking -50m absolute altitude is calculating benchmark, and pit shaft prospecting hole position of opening is located at+670m absolute altitude, therefore H=720m, former well
Cylinder prospecting hole aperture pressure P=1.93MPa, takes pressure loss P0=0.5MPa, by (II) formula can be calculated ρ=1.338 ×
103kg/m3, water burst pressure is balanced to realize, prevents big water burst accident, while water burst situation in peep hole, drilling mud presses density
1.30×103kg/m3It prepares；The drilling mud the preparation method comprises the following steps: in probing clay slurry, blanc fixe is added, obtains
The drilling mud；The required amount that blanc fixe is added, obtains according to formula (III):
W1=ρ1V0(ρ2-ρ0)/(ρ1-ρ2) (Ⅲ)
In formula: W1Quality, kg is added for barite；ρ1For barite density, kg/m3, take 4000kg/m3；V0It is brilliant to aggravate
Mud volume before stone, m3；ρ2To aggravate the mud density after spar, kg/m3；The density of the probing clay slurry is 1.10
×103kg/m3, the additional amount of the blanc fixe is 296.3kg；The probing clay slurry is by water, clay 1 and clay 2
The mass ratio of composition, the clay 1 and the clay 2 is 1:1.2；The grain size distribution of the clay 1 are as follows: granularity is less than
The clay of 0.002mm accounts for No. 1 gross mass 25.8% of clay, and granularity is more than or equal to 0.002mm and accounts for less than the clay of 0.005mm glutinous
The 4.9% of native No. 1 gross mass, granularity is more than or equal to 0.005mm and the clay less than 0.050mm accounts for No. 1 gross mass of clay
17.2%, granularity is more than or equal to 0.050mm and the clay less than 0.075mm accounts for the 52.1% of No. 1 gross mass of clay；It is described glutinous
The plasticity index of soil 1 is 26.8；Content of organics in the clay 1 is less than the 3wt% of clay gross mass；The clay
No. 2 grain size distributions are as follows: clay of the granularity less than 0.002mm accounts for No. 1 gross mass 17.7% of clay, and granularity is more than or equal to
0.002mm and the clay for being less than 0.005mm account for the 11.2% of No. 1 gross mass of clay, and granularity is more than or equal to 0.005mm and is less than
The clay of 0.050mm accounts for the 48.4% of No. 1 gross mass of clay, and granularity is more than or equal to 0.050mm and is less than the clay of 0.075mm
Account for the 22.7% of No. 1 gross mass of clay；The plasticity index of the clay 2 is 42.5；Content of organics in the clay 2
Less than the 3wt% of clay gross mass；
In drilling to the 6th slip casting section, be staggered drilling progress: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5
It is mutually staggered with drilling K6 drilling depth, drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 drilling depth
The vertical distance being staggered is 8~10m；
Using different drillings alternately slip casting, then small distance drilling, by big water yield stratum, include the following steps:
(B-4-1) drilling is observed and measured during creeping into the 6th slip casting section according to the water burst situation for extracting exploration in real time
Water burst situation；
(B-4-2) when in drilling K1, drilling K3 and drilling K5 water yield increase suddenly or be gradually increased to 10m3/ h with
On, brill, lower stop grouting plug are mentioned immediately；Comprehensive clay cement slurry is injected to the drilling, after grouting pressure reaches requirement, stops note
Slurry；By multiple slip casting, keep fracture filling more closely knit, blocking and reduction ambient water channel are reduced deep water yield, made big
Water yield becomes as medium and small water yield；Water yield is crept into still further below after significantly reducing, up through big water burst stratum；The synthesis
Type clay cement slurry is made of grouting clay slurry, cement and additive；The additive is waterglass, the mould of the waterglass
Number is 2.8-3.4, and the concentration of the waterglass is 38-42 Baume degrees；The density of the grouting clay slurry is 1.12 × 103
~1.24 × 103kg/m3, the additional amount of the cement is 50~300kg/m3, the additional amount of the waterglass is 2~40L/m3；
The grouting clay slurry is made of water, clay 1 and clay 2, and the mass ratio of the clay 1 and the clay 2 is
1:0.8；The grain size distribution of the clay 1 are as follows: clay of the granularity less than 0.002mm accounts for No. 1 gross mass 25.8% of clay, granularity
Clay more than or equal to 0.002mm and less than 0.005mm accounts for the 4.9% of No. 1 gross mass of clay, and granularity is more than or equal to 0.005mm
And the clay less than 0.050mm accounts for the 17.2% of No. 1 gross mass of clay, granularity is more than or equal to 0.050mm and is less than 0.075mm
Clay account for the 52.1% of No. 1 gross mass of clay；The plasticity index of the clay 1 is 26.8；It is organic in the clay 1
Object content is less than the 3wt% of clay gross mass；The grain size distribution of the clay 2 are as follows: granularity accounts for glutinous less than the clay of 0.002mm
Native No. 1 gross mass 17.7%, granularity is more than or equal to 0.002mm and the clay less than 0.005mm accounts for No. 1 gross mass of clay
11.2%, granularity is more than or equal to 0.005mm and the clay less than 0.050mm accounts for the 48.4% of No. 1 gross mass of clay, and granularity is big
Clay in being equal to 0.050mm and less than 0.075mm accounts for the 22.7% of No. 1 gross mass of clay；The plasticity index of the clay 2
It is 42.5；Content of organics in the clay 2 is less than the 3wt% of clay gross mass；
(B-4-3) then other are needed with the drilling of slip casting, according in step (B-4-2) grouting method and slip casting requirement
Infuse comprehensive clay cement slurry；
(B-4-4) alternately drilling, different drillings alternately infuse comprehensive clay cement slurry for each drilling, until reaching grouting pressure
Reach requirement, each drilling is each passed through big water burst stratum.
To prevent from flooding the phenomenon that boring nest generation, K1 drilling and K3 drilling detecting water by pilot hole slip casting are selected.In order to make clay cement
Slurries diffusion uniformly, more sufficiently more effectively fills big water burst stratum crack, decides whether to infuse according to each drilling water burst situation
On the basis of slurry, each drilling small distance drilling alternately slip casting is carried out so that slurries uniformly diffuse to form curtain and realizes shaft area
The whole effectively filling in crack.The slip casting situation (being ranked up according to the slip casting date) of site operation is shown in Table 23.
The big water burst stratum slip casting situation table in 23 deep of table
As can be seen from Table 23, drilling K3 takes the lead in disclosing big water burst stratum, and drilling K3 was crept into extremely on April 26th, 2017
When hole depth 688m, meets water burst in hole and increase to 8m suddenly3/ h causes brill nest to be flooded to prevent from continuing creeping into water burst and increased dramatically,
Pull out of hole lower plug slip casting immediately, infuses clay cement slurry 1794.96m3Afterwards, pressure rises to 18.4MPa, and water yield is decreased in hole
1.8m3/ h, grouting pressure reach requirement 18.8-28.2MPa, stop to K3 bored grouting.
Then it drills to K1, injects clay cement slurry, reach grouting pressure 18.0MPa, stop to K1 bored grouting.
As shown in table 23, small distance drilling, different drillings alternately note clay cement slurry are repeated, is reached until reaching grouting pressure
To requirement, by the way that constantly alternately note clay cement slurry, crack are constantly blocked, water yield is constantly reduced, and the pressure of slip casting is not
Disconnected to increase, by being up to the slip casting of a wheat harvesting period, the big big crack in water burst stratum is smoothly blocked, and slip casting effect is obvious, K3 and K1
For the grouting pressure of drilling more than 22MPa, the bore flooding quantity after note is zero, drills and successfully passes through big water burst stratum.
Grouting quality analysis: 112 line interior shaft near wellbore water flooding of Yiliang Chi Hong mining industry Co., Ltd Maoping Pb-Zn ore deposit
Literary geology and engineering geological condition are complex, to guarantee slip casting effect, to each link during entire mortar depositing construction
Quality control has been carried out, now auxiliary shaft grouting quality has been analyzed from the following aspects.
1. injected hole deflection situation analysis: the distribution of injected hole and drop point are the preconditions for guaranteeing grouting quality, according to
Design requirement, Hole deviation is not more than 3 ‰, and each level drop point is substantially uniformly distributed.Actual deviation proportion, which meets design, to be wanted
It asks, and drills and be distributed general uniform on Grouting Circle diameter, it is also substantially uniformly distributed in the drop point of different depth, to ensure that slip casting
The quality of engineering.Specific hole scattering situation table 17 is to table 22.
2. grouting pressure is analyzed: grouting pressure is to overcome slurries flow resistance, drive slurries in rock crack (and stratum boundary
Face, crushed zone) in flowing, diffusion, filling, densification power, be one of most important grouting parameter.Rock cap section during slip casting
Final grouting pressure is 1.5~2.0 times of hydrostatic pressure；Other slip casting section final grouting pressures are 2.0~2.5 times of hydrostatic pressure.Cementer
It can suitably be adjusted according to the actual situation in journey.
Each slip casting section final grouting pressure and design final pressure value comparison as shown in table 24, each section of each hole final grouting pressure value reach or
It has been more than design requirement.
Each hole section final grouting pressure of table 24 and design final pressure value contrast table
3. slurries injection rate is analyzed: enough slurries injection rates are the objects that Pit Ground Pre-grouting forms effective water seal curtain
Quality guarantee card is the basis for determining grouting for water blocking quality, and each hole section grouting amount (reinforces and sealing of hole single slurry) situation without crushed zone
Summarize and is shown in Table 25.Each section of grouting amount of pit shaft is unevenly distributed as shown in Table 25, this is because stratum institute preservation fractured zones are uneven
Caused by one, rock cap section minimum 32.804m3, the 6th section of maximum reach 9700.16m3.6th section is the big water burst stratum in deep, is split
Gap is extremely developed, and Communicating is good, surveys hole related data according to work, this section of stratum water yield is big, and water burst hydraulic pressure is higher, is this slip casting
The emphasis of harnessing project, difficult point place.By 24 slip casting, the water burst on big water burst stratum is successfully controlled, depth is passed through
It simultaneously finally constructs to projected depth on the big water burst stratum in portion.Entire pit shaft is total to slip casting 112 times, slip casting total amount 15314.246m3, for original
Design 18633 m of slip casting total amount382.19%, finally averagely injection rate is that every meter of pit shaft injects about 30.88m3。
25 each sections of slip casting situation summary sheets of table
4. pressing moisture analysis before slip casting: compressed water section specific water absorption reflects the fractured situation and rich water by note stratum
Property, specific water absorption is smaller, and reflection watery is lower.The variation of common slip casting front and back compressed water section specific water absorption during slip casting
It evaluates grouting for water blocking effect and evaluates the degree that infused rock stratum hydrogeology improves.
Compressed water section specific water absorption is calculate by the following formula:
W---- compressed water section specific water absorption in formula, L/ (minmm)；Q---- presses water flow, L/min；P---- pressure
Water pressure (is converted into water-column), m；L---- compressed water section length, m.
It can qualitatively be analyzed and be infused by the compressed water section specific water absorption variation comparison before and after the multiple slip casting of single hole single hop
The hydrologic condition of aquifer water-bearing stratum improves situation.As shown in figure 20: unit is inhaled before the hole K1 third section is infused on March 19th, 2017 for the first time
Water is 0.0083L/ (minmm), and specific water absorption is 0.0021L/ (minmm), on March 29th, 2017 after note
It is 0.0032L/ (minmm) that second, which is infused preceding specific water absorption, and specific water absorption is 0.0015L/ (minm after note
m).Front and back slip casting twice, it is very significant to the improvement of stratum hydrologic condition.
And comparison is changed by the compressed water section specific water absorption before each multiple slip casting of hole single hop between a sequence hole, two sequence holes
Can qualitatively analyze is improved situation by the hydrologic condition of note aquifer water-bearing stratum.
As shown in figure 21: it is 0.0083L/ that water specific water absorption is pressed before a sequence hole K1 third slip casting section first time slip casting
(minmm), water specific water absorption is pressed to be reduced to 0.0072L/ (min before a sequence hole K3 third slip casting section first time slip casting
Mm), water specific water absorption is pressed to be reduced to 0.0044L/ (min mm) before a sequence hole K5 third slip casting section first time slip casting.K6
It is 0.0022L/ (minmm) that water specific water absorption is pressed before third section first time slip casting, is pressed before K2 third section first time slip casting
Water specific water absorption is 0.0027L/ (minmm), and pressure water specific water absorption is before K4 third section first time slip casting
0.0025L/(min·m·m).Preceding specific water absorption is infused than a sequence hole slip casting in the hole for embodying the two sequence hole slip casting of same layer position
Specific water absorption has the tendency that reduction before hole is infused.Also illustrate the slip casting by a sequence hole, aquifer water-bearing stratum crack is effectively filled out
It fills, presses water specific water absorption to significantly reduce than a sequence hole before the note in two sequence holes, embody good slip casting effect.
5. the packer permeability test inspection of final inspection hole
According to Design of Construction Organization, packer permeability test is carried out to vertical shaft inlet well, surplus inflow of water is calculated, as inspection
Look into the reference standard of entire pit shaft rock grouting section mortar depositing construction quality.It is as follows according to stationary flow theoretical calculation formula:
1) calculation permeability coefficient formula:
1. W=Q/ (PL)
2. K=0.52704Wlg (0.66L/r)
In formula: P-pressure water pressure is converted into water-column (m)；Q-pressure water flow (L/min) W-compressed water section unit is inhaled
Water [L/ (mmmin)]；L-compressed water section is high (m)；R-boring radius (m)；K-infiltration coefficient (m/d).
2) the estimated calculation formula of the inflow of water of packer permeability test:
3. R=10Sw k1/2
④QWell=1.366K M (2H0- M)/(lgR-lgrWell)
In formula: QWell- expect inflow of water (m3/d)；Sw- water-bearing layer drawdown (m)；K-infiltration coefficient (m/d)；
H0- water-bearing layer hydrostatic level to aquifer floor elevation height (m)；M-water-bearing layer thickness (m)；R-water level is down to aquifer floor elevation
When the radius of influence (m)；rWell- pit shaft famine radius (m).
On September 13rd, 2017 to 516~757.28m sections, 254~516m sections of the hole K2 progress packer permeability test, by related data
Above-mentioned calculation formula is substituted into, surplus inflow of water can be calculated are as follows: 4.83m3/h。
In short, by the above various aspects comprehensive analysis, this construction quality be it is guaranteed, can achieve design requirement.
6. loop graph is handed in slip casting
According to the grouting amount 15314.246m of full pit shaft3, grouting amount calculation formula inverse grout spreading range can be passed through.By
Formula: Q=A π R2Hn β/m, wherein (R=r+L) it follows that
Wherein: Q is grouting amount (m3)；A is that slurries spread consumption coefficient；R is grout spreading range (m)；H is slip casting section
It is high；N is rock average crack rate；β is slurries volumetric efficiency；M is rock calculus rate；R is boring radius, L be slurries spread away from
From.
The calculation shows that, slurries diffusion length L=9.062m.
7. slurries Seed harvest
According to the practical exposure situation of sinking shaft unit, slurries Seed harvest is full of in rock cap section and the first slip casting section rock crack,
Slurries and rock stratum are more completely combined together.As shown in Figure 22 and Figure 23.
112 line interior shaft pit shaft pre-pouring grout engineering of Yiliang Chi Hong mining industry Co., Ltd Maoping Pb-Zn ore deposit is through self-test drilling quality
Well, distribution of boreholes and deviation proportion meet design requirement, and the grouting parameters such as final grouting pressure and injection rate basically reach design standard,
Slurries water block curtain is completely effective, and calculating estimated surplus inflow of water through packer permeability test is 4.83m3/h.
Claims (10)
1. a kind of blind oblique vertical shaft parallel construction method of metal mine, which comprises the steps of:
(A) it is drilled around the injected hole of the blind oblique vertical shaft (2-12) of metal rock；
(B) around the injected hole slip casting of the blind oblique vertical shaft (2-12) of metal rock；
(C) in step (A) and step (B) work progress, while work is prepared to the blind oblique vertical shaft (2-12) of metal rock
And drilling construction, it is 120m to blind oblique vertical shaft (2-12) the drilling water yield extremely at issue of metal rock3/ h or more,
When the high pressure-bearing crevice water stratum that aperture hydraulic pressure is 1.90MPa or more is greater than or equal to 35m, injected hole is waited to pass through " issue
Place's water yield is 120m3/ h or more, aperture hydraulic pressure be 1.90MPa or more high pressure-bearing crevice water stratum " and slip casting after, then
Continue blind oblique vertical shaft (2-12) drilling construction of metal rock.
2. a kind of blind oblique vertical shaft parallel construction method of metal mine according to claim 1, which is characterized in that
In step (A), include the following steps:
(A-1) ground slurry preparing station, grouting chamber and the stability arrangement for boring nest chamber；
(A-2) large-scale probing grouting equipment is delivered to grouting chamber and bores nest chamber；
(A-3) solid pipeline section uses the full hole S directional drilling construction and slip casting section drilling operation；
In step (B), include the following steps:
(B-1) preparation of injecting paste material；
(B-2) pressure water is tested before first carrying out slip casting, is then adjusted injecting paste material, is carried out segmenting slip casting, reach each section of slip casting pressure
Power completes grouting and water-proof work；When encountering high artesian stratum: by adjusting drilling tool, adjust drilling mud, be staggered drilling progress
And the mode of different drilling alternating slip castings is realized and is passed through；The high artesian stratum is that water yield is 120m at issue3/h
Above, aperture hydraulic pressure is the high pressure-bearing crevice water stratum of 1.90MPa or more.
3. a kind of blind oblique vertical shaft parallel construction method of metal mine according to claim 2, which is characterized in that
In step (A-1), at one ground slurry preparing station of ground configuration that absolute altitude is 901m, in the underground activities that absolute altitude is 670m
Platform arranges grouting chamber and bores nest chamber；
The ground slurry preparing station is arranged in Luo Ze east of a river side of the southern curtain tunnel southward at 400m；The ground slurry preparing station, from
North orientation south be provided with mound field (1-1), magma pond (1-2), pulp storage tank (1-3), slip house (1-4), slurrying platform (1-5) and
Storehouse (1-6)；
The slip casting chamber (2-11) is arranged on original tunnel；Original tunnel is 110 line tunnels (2-13), the slip casting
Distance of the center of chamber (2-11) at the center of interior shaft pit shaft (2-12) is 63m, the slip casting chamber (2-11)
Arrangement quantity be 1；A length of 17.2m of the slip casting chamber (2-11), width 7.5m, a height of 9m；In the slip casting chamber
In (2-11): 1 waterglass pond (2-7) is being successively arranged along its length apart from the closer side interior shaft pit shaft (2-12), 1
A clear water reserviors (2-8) and 1 stirring pool (2-9), apart from the farther away side interior shaft pit shaft (2-12) along its length successively
It is mounted with 2 grouting pumps (2-10)；
The brill nest chamber arrangement is on the circumference centered on interior shaft pit shaft (2-12)；The brill nest chamber is 3, uniformly
It is arranged on the circumference centered on interior shaft pit shaft (2-12)；3 brill nest chambers are respectively No. 1 brill nest (2-14), No. 2 brill nests
(2-15) and No. 3 brill nests (2-16)；2 drillings are provided in each brill nest chamber, i.e. No. 1 brill nest (2-14) has 2 drillings, point
Wei not drill K5 and drilling K6, and No. 2 brill nests (2-15) have 2 drillings, respectively drilling K3 and drilling K4, No. 3 brill nests (2-16)
There are 2 drillings, respectively drilling K1 and drilling K2；The drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6
Cloth hole is on the circle centered on interior shaft pit shaft (2-12), the interior shaft pit shaft center of circle (2-12) to drilling K1, drilling K2, drilling
K3, drilling K4, drilling K5 and drill K6 distance be 14m；
The lower part for boring nest chamber is rectangular parallelepiped structure, and long a and width b are 9m, and high h1 is 3m；The top for boring nest chamber
For truncated rectangular pyramids structure, the long a and width b of the bottom surface of the truncated rectangular pyramids are 9m；The upper bottom surface of truncated rectangular pyramids is rectangle, and long c is
7m, width d are 4m；The high h2 of the truncated rectangular pyramids is 13m；Along upper bottom surface width direction, the truncated rectangular pyramids section be it is trapezoidal, it is trapezoidal
The angle α of one waist and bottom surface is 84 °, and the angle β of another trapezoidal waist and bottom surface is 74 °；
In each brill nest chamber: the distance of center circle f of two drilling is 3m, and the radius of each drilling is 0.64m；Two drilling
The horizontal distance e of long side of the center of circle to truncated rectangular pyramids upper bottom surface is 2m, center of circle of one of drilling to truncated rectangular pyramids upper bottom surface
The horizontal distance g of one short side is 1.966m, the level of another short side in another center of circle to drill to truncated rectangular pyramids upper bottom surface
Distance k is 2.034m；
The brill nest chamber opening is connected with nest connecting taxiway (2-3) is bored, and along upper bottom surface length direction, the truncated rectangular pyramids edge is cutd open
Face be it is trapezoidal, the angle γ of trapezoidal a waist and bottom surface is 83 °, another trapezoidal waist and is bored nest connecting taxiway (2-3)
Top is cambered surface connection, and the radius of cambered surface is 4m；
In each brill nest chamber: the neighbouring side for boring nest connecting taxiway (2-3) and the long side close to rectangular parallelepiped structure is dug
Have sedimentation basin (2-4), a length of 4m, width 1.5m, the depth 1m of sedimentation basin；Join on the outside of each brill nest chamber and with the brill nest
The opposite side in network road (2-3), which is dug, to be had motor chamber (2-5), and the length and width and height of the motor chamber (2-5) are 2m, institute
The center for stating motor chamber (2-5) faces the center of circle of two drilling；
The cross section lower half for boring nest connecting taxiway (2-3) is rectangle, a length of 4m, width 1.8m, a height of 1.2m, the brill
The cross section upper half of nest connecting taxiway (2-3) is three fan annular compositions, is 0.894m in the radius of the fan annular of two sides, intermediate
Fan annular radius be 3.044m, it is described bore nest connecting taxiway (2-3) side be provided with ditch (2-6), the width and depth in ditch
It is 0.3m.
4. a kind of blind oblique vertical shaft parallel construction method of metal mine according to claim 2, which is characterized in that
In step (A-2), large size probing grouting equipment is first disassembled and classifies, and then according to different classifications, selects different transports
Method, finally the large-scale probing grouting equipment assembling for being transported to operating position；
The probing grouting equipment includes drilling machine, grouting pump, slush pump, drilling rod, drill collar and boring tower；The drilling machine is disassembled for brill
3 chassis, the rock core machine of drilling machine and the mill of drilling machine of machine；The grouting pump dismantling is electronic for the chassis of grouting pump, grouting pump
Machine and the grouting pump pump housing；
It is the equipment of single-piece dismantling, is divided into three classes:
First kind equipment is the big part of single-piece size, the chassis on 3 chassis and grouting pump including drilling machine；
Second class equipment is the part that single-piece is small in size but quality is big, including slush pump, the rock core machine of drilling machine, the mill of drilling machine, note
Stock pump motor and the grouting pump pump housing；
Third class equipment is that single-piece is elongate articles, including drilling rod, drill collar and boring tower；
According to different classifications method, different transportation resources are selected in different transport sections:
(A-2-1) interior shaft well head is transported to by material stockyard:
The conveyer method of first kind equipment are as follows: use loading shovel front end scraper；One end of first kind equipment is placed in loading machine
In scraper bowl, the two corners of the other end are bound with wirerope respectively, its other end is fixed on scraper bowl with shackle after wirerope is tensed
Top；Loading machine is lifted after scraper bowl directly by equipment scraper to interior shaft well head；
The conveyer method of second class equipment are as follows: fortune is hung using loading shovel；Second class equipment directly uses a root long wirerope
Both ends are enclosed rotating around equipment both ends one carries out bundled fixed, then will hang on loading shovel in the middle part of wirerope, adjusts level
Afterwards, hanging equipment is directly transported to interior shaft well head；
The conveyer method of third class equipment are as follows: by sledge, hauled with loading machine；First with loading machine by third class equipment backpack
Third class equipment is tied with sledge onto sledge, then with wirerope, to ensure the balance and stability during hauling, all thirds
The center of gravity of class equipment should be slightly forward in the middle part of sledge position；Then with a root long wirerope, from bypassing third class equipment above,
The both ends of long wirerope are fixed on the dedicated fixed point of sledge front end two sides, are hung in the middle part of long wirerope and load drive end unit
On hook；Then sledge is hauled to interior shaft well head by loading machine；The sledge has steel-pipe welding to form, production method are as follows: climbs
Plough two sides are large steel pipe, and centre is welded and fixed with small steel pipe with large steel pipe, and both ends nozzle of the large steel pipe by ground, which is made into, to be upwarped
Arc；
(A-2-2) it is transferred by interior shaft well head to 670 ingates:
The pay-off method of first kind equipment are as follows: the two corners for binding the short side of first kind equipment respectively with wirerope both ends, by steel wire
Rope middle part is hung on the big hook of lifting system, directly decentralization to 670 ingates；
The pay-off method of second class equipment are as follows: tied with the both ends of a root long wirerope rotating around the second class equipment both ends one circle
It is strapped fixed, then by the big hook for hanging over lifting system in the middle part of wirerope, directly transfer to 670 ingates；
The pay-off method of third class equipment are as follows: the wirerope of 6 root long 11m of establishment, 6 wirerope are each passed through 6 third classes and set
It is another with shackle by 6 steel wire rope head strings to together, then with 6 wirerope of a root thickness steel wire penetrating after standby central aperture
It is hung over after the rope end of one end on the big hook of lifting system, third class equipment is lifted after hook and is allowed in upright stable state, then
It directly transfers to 670 ingates；
(A-2-3) each job position is transported to by 670 ingates:
First kind equipment, the second class equipment and third class equipment Transfer method: when at decentralization to 670 ingates, electricity consumption scraper
The equipment bottom end for pulling decentralization givees a signal when pulling, slowly transfers hook, be completely in 670 ingates to equipment center of gravity
When, release hook wirerope；After adjusting device location and arranging wirerope, equipment is transported to each job position with scraper；
It is that sequencing and sky are assembled according to underground equipment by the principle that interior shaft well head is transferred to the decentralization sequence of 670 ingates
Between demand arrange；The decentralization sequence of drilling machine are as follows: first transfer the chassis of 3 drilling machines, then transfer the rock core machine and mill of drilling machine, most
After transfer boring tower；The decentralization sequence of grouting pump are as follows: first transfer the chassis of grouting pump, then transfer the motor and the pump housing of grouting pump；
Finally, the equipment for being transported to each job position is assembled:
Slush pump: it after the pump housing and the electric scraper cross-docking job position of motor utilization, is assembled；
Grouting pump: after the chassis of grouting pump is using electric scraper cross-docking job position, it is mounted directly connection bolt；It again will note
The pump housing of stock pump and the motor of grouting pump after electricity consumption scraper cross-docking job position, are assembled；
Drilling machine: after 3 chassis of drilling machine are using electric scraper cross-docking job position, it is mounted directly connection bolt；Drilling machine
The assembling of the rock core machine of mill and drilling machine hangs up 10t in lifting beam using preassembled 16# flange beam hoisting beam at the top of nest is bored
Pulley, bore nest bottom highwall and make anchor pole jinny, winch cable pass through after pulley with tie up the wirerope company in equipment
Capable promotion is tapped into, electric scraper, which carries out auxiliary, ensures the steady safety of equipment.
5. a kind of blind oblique vertical shaft parallel construction method of metal mine according to claim 2, which is characterized in that in step
Suddenly in (A-3),
It constructs in solid pipeline section, is constructed using the directional drilling of full S-shaped hole: by drilling K1, drilling K2, drilling K3, drilling K4, drilling K5
With drilling K6 respectively introduces drilling drop point K1 ', drilling drop point K2 ', drilling drop point K3 ', drilling drop point K4 ', drill drop point K5 ' and
Drill drop point K6 '；The drilling drop point K1 ', drilling drop point K2 ', drilling drop point K3 ', drilling drop point K4 ', drilling drop point K5 ' and
Drop point K6 ' drill respectively on the circle centered on interior shaft pit shaft (2-12), with the interior shaft pit shaft center of circle (2-12) to drilling
Drop point K1 ', drilling drop point K2 ', drilling drop point K3 ', drilling drop point K4 ', the distance for the drop point K5 ' and the drop point K6 ' that drills that drills are equal
For 4.75m；Drill drop point K1 ', drilling drop point K2 ', drilling drop point K3 ', drilling drop point K4 ', drilling drop point K5 ' and drilling drop point
The distance of each adjacent drilling drop point is 4.75m between K6 '；
S-shaped drilling track in the earth formation be it is three-dimensional, be divided into straight hole section (AB), increasing hole angle section (BC), steady tilted section (CD), drop angle section
(DE)；
Shown in S-shaped drilling track formula such as formula (I):
θ=arctan { (R1+R2)/[(D1-D2)2-2(R1+R2)X+X2]1/2}-arctan[(R1+R2-X)/(D2-D1)] (Ⅰ)
Wherein:
R1=57.3/Kc1；R2=57.3/Kc2；L1=30.48 γ/Kc1；L2=30.48 γ/Kc2；CD=[(D1-D2)2-2(R1+
R2)X+X2]1/2；
D1 is increasing hole angle section (BC) starting point depth, that is, starts depth when directional drilling, when D2 is after drop angle as straight hole section
Depth, R1 are the radius of curvature of increasing hole angle section (BC), and R2 is the radius of curvature of drop angle section (DE), and θ is the apex angle of steady tilted section (CD), X
For the horizontal off set of target point；Kc1、Kc2For the build angle rate of increasing hole angle section (BC) and drop angle section (DE), build angle rate has with deflecting tool
It closes；L1Arc length is crept into for increasing hole angle section (BC)；L2For the drilling arc length of drop angle section (DE)；θ and CD is key parameter；
Drilling is crept into from workbench aperture to 50m at for straight hole section (AB), locates the use for increasing hole angle section (BC) to 80m from 50m
Helicoid hydraulic motor implements directional drilling, and target bearing X and vertex angle theta reach into target requirement, and vertex angle theta increases to 3.5 °, starts steady tilted section
(CD) when steady tilted section (CD) creeps into 20m to 30m, implement deviational survey to drilling construction at 240m from 80m, monitor injected hole in real time
Gu pipeline section deviation data implements drop angle using helicoid hydraulic motor from 240m to being drop angle section (DE) directional drilling at 254m；
Drilling uses Φ 215.9mm drill bit reaming after solid pipeline section is using Φ 133mm drill bit drilling, then descends 168 × 7mm of Φ seamless
Steel sleeve is managed admittedly；In solid pipeline section, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 are bored from workbench 0m
254m is proceeded to, drilling depth is 254m.
6. according to claim, a kind of blind oblique vertical shaft parallel construction method of metal mine described in 2, which is characterized in that
In step (A-3),
Slip casting section drilling operation, slip casting section implement straight hole section drilling construction, implement slip casting section straight hole using 7LZ95 helicoid hydraulic motor and entangle
Tiltedly work；
Be staggered drilling progress: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 drilling depth mutually stagger,
Drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and the distance that K6 drilling depth is staggered that drills should be greater than 8-10m；
At rock cap end, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 from absolute altitude 254m creep into
274m, drilling segment length is 20m,
In the first slip casting section, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 from absolute altitude 274m creep into
330m, drilling segment length is 56m,
In the second slip casting section, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 from absolute altitude 330m creep into
405m, drilling segment length is 75m,
In third slip casting section, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 from absolute altitude 405m creep into
474m, drilling segment length is 69m,
In the 4th slip casting section, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 from absolute altitude 474m creep into
550m, drilling segment length is 76m,
In the 5th slip casting section, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 from absolute altitude 550m creep into
628m, drilling segment length is 78m,
In the 6th slip casting section, the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 from absolute altitude 628m creep into
710m, drilling segment length is 82m,
In the 7th slip casting section, the K1 that drills is crept into from absolute altitude 710m to 756.7m, and creeping into segment length is 46.7；K2 drill from absolute altitude 710m
For drilling to 757.28m, creeping into segment length is 47.28；Drilling K3 is crept into from absolute altitude 710m to 755.13m, and creeping into segment length is 45.13；
Drilling K4 is crept into from absolute altitude 710m to 759.01m, and creeping into segment length is 49.01；Drilling K5 is crept into from absolute altitude 710m to 755.49m,
Creeping into segment length is 45.49；Drilling K6 is crept into from absolute altitude 710m to 756.55m, and creeping into segment length is 46.55；
K1, the K3 and K5 that drills that drills drill as a sequence hole, K2, K4 and K6 are two sequence holes.
7. a kind of blind oblique vertical shaft parallel construction method of metal mine according to claim 2, which is characterized in that in step
Suddenly in (B-1), the injecting paste material includes single liquid cement slurry, clay cement slurry and chemical pulp；
The list liquid cement slurry is that salt and triethanolamine are added in cement slurry；The cement slurry addition clear water volume with plus
The mass ratio for entering cement is 0.5-1.5:1；The additional amount of salt is the 0.05% of cement additional amount, and the additional amount of triethanolamine is
The 0.005% of cement additional amount；
The list liquid cement slurry the preparation method comprises the following steps: level-one stirring pool is added in clear water after, utilize automatic charging and metering system
Cement in bulk cement tank is quantitatively adding level-one stirring pool, after being sufficiently stirred, transfers to second level stirring pool；In grouting
Salt, triethanolamine are quantitatively adding using metering system in the indoor stirring pool of cave (2-9), to get single liquid after being sufficiently stirred
Cement slurry；
The clay cement slurry is made of clay slurry, cement and additive；The clay cement slurry density is 1.15 × 103~
1.33×103kg/m3；The density of the clay slurry is 1.12 × 103~1.24 × 103kg/m3, the additional amount of the cement is 50
~300kg/m3, the additive is waterglass, and the additional amount of the waterglass is 2~40L/m3；The modulus of the waterglass is
2.8-3.4, the concentration of the waterglass are 38-42 Baume degrees；The specification of the cement is as follows: intensity is more than or equal to 42.5, water
Cement content of the mud pellet degree greater than 80 μm is less than or equal to 5%；
The clay water slurrying method are as follows: using automatic charging and metering system by the cement in bulk cement tank according to every
Cubic meter clay slurry is added 50~300kg of cement and is quantitatively adding level-one stirring pool, after being sufficiently stirred, transfers to second level stirring pool；
2~40L of waterglass is added according to every cubic metre of clay slurry in additive using metering system and is quantitatively adding second level stirring pool, sufficiently
To get clay cement slurry after stirring；
The granularity of clay in the grouting clay slurry is that the clay of the particle less than 0.005mm is more than or equal to clay gross mass
25wt%；The granularity of the sand of clay is that the content of the sand greater than 0.075mm and less than 20.0mm is less than or equal to clay gross mass
5%；The plasticity index of clay is greater than 10；Content of organics is less than the 3wt% of clay gross mass in clay；
The clay slurry the preparation method comprises the following steps: using high-pressure water jet clay, form preliminary clay slurries, then will be preliminary glutinous
Soil paste liquid desanding, is carried out levigate by pulper, obtains clay slurry, is put into storage in pulp storage tank；
Clay in the clay magma one or more is formed by clay No. 1 and clay 2；The particle size fraction of the clay 1
Match are as follows: clay of the granularity less than 0.002mm accounts for No. 1 gross mass 25.8% of clay, and granularity is more than or equal to 0.002mm and is less than
The clay of 0.005mm accounts for the 4.9% of No. 1 gross mass of clay, and granularity is more than or equal to 0.005mm and the clay less than 0.050mm accounts for
The 17.2% of No. 1 gross mass of clay, granularity is more than or equal to 0.050mm and the clay less than 0.075mm accounts for No. 1 gross mass of clay
52.1%；The plasticity index of the clay 1 is 26.8；Content of organics in the clay 1 is less than clay gross mass
3wt%；
The grain size distribution of the clay 2 are as follows: clay of the granularity less than 0.002mm accounts for No. 1 gross mass 17.7% of clay, and granularity is big
Clay in being equal to 0.002mm and less than 0.005mm accounts for the 11.2% of No. 1 gross mass of clay, granularity be more than or equal to 0.005mm and
Clay less than 0.050mm accounts for the 48.4% of No. 1 gross mass of clay, and granularity is more than or equal to 0.050mm and sticking less than 0.075mm
Soil accounts for the 22.7% of No. 1 gross mass of clay；The plasticity index of the clay 2 is 42.5；Organic matter in the clay 2 contains
Amount is less than the 3wt% of clay gross mass；
The chemical pulp is made of waterglass and gelling agent, and the volume ratio of the waterglass and gelling agent is 3.89-4:1.
8. a kind of blind oblique vertical shaft parallel construction method of metal mine according to claim 2, which is characterized in that in step
Suddenly in (B-2), the design grouting pressure of the K1 that drills, drilling K2, drilling K3, drilling K4, each section of K6 of drilling K5 and drilling are as follows: in rock
The final grouting pressure of cap section is 7.6-10.1MPa, is 11.2-16.8MPa in the final grouting pressure of the first slip casting section, in the second slip casting section
Final grouting pressure be 12.7-19.1MPa, third slip casting section final grouting pressure be 14.1-21.1MPa, in the 4th slip casting section
Final grouting pressure is 15.6-23.4MPa, is 17.2-25.7MPa in the final grouting pressure of the 5th slip casting section, in the note of the 6th slip casting section
Slurry final pressure is 18.8-28.2MPa, is 19.7-29.55MPa in the final grouting pressure of the 7th slip casting section.
9. a kind of blind oblique vertical shaft parallel construction method of metal mine according to claim 8, which is characterized in that advanced
Water test is pressed before row slip casting, then adjusts injecting paste material, carries out segmenting slip casting, reaches each section of grouting pressure, and it is anti-to complete slip casting
Water conservancy project is made；In each slip casting section, note should be answered when once grouting cannot reach design requirement, note interval time should be greater than being equal to again
12h；
In solid pipeline section slip casting: when casing section is constructed, drilling to after 254m, use instead Φ 133mm drill bit continue to be drilled down into 1.0~
2.0m, with deposition hole Nei Yan, native break flour；Then descend Φ 168 × 7mm seamless steel pipe, after casing is down toward 254m, in casing under
Stop grouting plug, stop grouting plug is down toward sleeve bottom, at 3~4m of bottom, is first pumped clear water with slip casting, only slurry effect is checked, if in hole
Water phenomenon is returned, Ying Qisai is again lower to be filled in, until not returning water；In Drive stroke, casing outer rim hole wall returns water phenomenon,
Single liquid cement slurry is injected to after clarifying wait return water, after casing outer rim returns out single liquid cement slurry, i.e. stopping slip casting, then be quantitatively pressed into
Clear water；It is filled in from 6~8 hours, is scanned out after 12 hours in casing away from the cement slurry on 1.0~1.5m of bottom, it is small to continue maintenance 24~36
When, packer permeability test is greater than 2MPa in casing, water is not returned outside casing, Gu pipe terminates；Drill K1, drilling K2, drilling K3, drilling K4,
Drilling K5 and drilling K6 is 10m in the volume that solid pipeline section enters single liquid cement slurry3, the wherein additional amount 10.91t of cement,
The additional amount of salt is 54.6kg, and the additional amount of triethanolamine is 5.4kg；
In rock cap section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject single liquid cement slurry,
Drilling K1 is 9.12m in the volume of the single liquid cement slurry of injection of rock cap section3, wherein the additional amount of cement is 4.94t, salt
Additional amount be 24.38kg, the additional amount of triethanolamine is that 2.442kg by 2 slip casting makes grouting pressure reach 7.3MPa,
Drilling K1 is completed in the slip casting of rock cap section；
Drilling K2 is 3.465m in the volume of the single liquid cement slurry of injection of rock cap section3, wherein the additional amount of cement is 2.63t, salt
Additional amount be 13.167kg, the additional amount of triethanolamine is that 1.386kg by 1 slip casting reaches grouting pressure
15.2MPa completes drilling K2 in the slip casting of rock cap section；
Drilling K3 is 4.06m in the volume of the single liquid cement slurry of injection of rock cap section3, wherein the additional amount of cement is 3.157t, salt
Additional amount be 15.98kg, the additional amount of triethanolamine is that 1.689kg by 1 slip casting reaches grouting pressure
10.3MPa completes drilling K3 in the slip casting of rock cap section；
Drilling K4 is 3.96m in the volume of the single liquid cement slurry of injection of rock cap section3, wherein the additional amount of cement is 3.006t, salt
Additional amount be 15.048kg, the additional amount of triethanolamine is that 1.584kg by 1 slip casting reaches grouting pressure
13.8MPa completes drilling K4 in the slip casting of rock cap section；
Drilling K5 is 9.13m in the volume of the single liquid cement slurry of injection of rock cap section3, wherein the additional amount of cement is 5.6t, salt
Additional amount is 27.796kg, and the additional amount of triethanolamine makes grouting pressure reach 10.0MPa for 2.842kg by 2 slip casting,
Drilling K5 is completed in the slip casting of rock cap section；
Drilling K6 is 3.069m in the volume of the single liquid cement slurry of injection of rock cap section3, wherein the additional amount of cement is 2.329t, food
The additional amount of salt is 11.662kg, and the additional amount of triethanolamine is that 1.228kg passes through 1 slip casting, reaches grouting pressure
12.7MPa completes drilling K6 in the slip casting of rock cap section；
In the first slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement slurry:
Drilling K1 is 143.46m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
14.346t, the additional amount of waterglass are 1434.6L, by 2 slip casting, grouting pressure are made to reach 20.0MPa, complete drilling K1
It works in the slip casting of the first slip casting section；
Drilling K2 is 14.59m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
2.189t, the additional amount of waterglass are 87.54L, by 1 slip casting, grouting pressure are made to reach 17.2MPa, complete drilling K2 and exist
The slip casting of first slip casting section works；
Drilling K3 is 59.77m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
5.977t, the additional amount of waterglass are 597.7L, by 2 slip casting, grouting pressure are made to reach 20.0MPa, complete drilling K3 and exist
The slip casting of first slip casting section works；
Drilling K4 is 17.36m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
2.604t, the additional amount of waterglass are 104.16L, by 1 slip casting, grouting pressure are made to reach 17.6MPa, complete drilling K4 and exist
The slip casting of first slip casting section works；
Drilling K5 is 140.11m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
16.52t, the additional amount of waterglass are 1401.1L, by 2 slip casting, grouting pressure are made to reach 20.0MPa, complete drilling K4 and exist
The slip casting of first slip casting section works；
Drilling K6 is 10.86m in the volume of the injection clay cement slurry of the first slip casting section3, wherein the additional amount of cement be
1.629t, the additional amount of waterglass are 65.16L, by 1 slip casting, grouting pressure are made to reach 17.5MPa, complete drilling K6 and exist
The slip casting of first slip casting section works；
In the second slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement slurry:
Drilling K1 is 9.05m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement is 0.91t,
The additional amount of waterglass is 27.15L, by 1 slip casting, grouting pressure is made to reach 17.5MPa, completes drilling K1 in the second slip casting
The slip casting work of section；
Drilling K2 is 22.26m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement is 3.34t,
The additional amount of waterglass is 133.56L, by 1 slip casting, grouting pressure is made to reach 18.6MPa, completes drilling K2 in the second note
Starch the slip casting work of section；
Drilling K3 is 30.13m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement be
3.014t, the additional amount of waterglass are 90.39L, by 1 slip casting, grouting pressure are made to reach 18.5MPa, complete drilling K3 and exist
The slip casting of second slip casting section works；
Drilling K4 is 18.59m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement be
2.789t, the additional amount of waterglass are 111.54L, by 1 slip casting, grouting pressure are made to reach 21.7MPa, complete drilling K4 and exist
The slip casting of second slip casting section works；
Drilling K5 is 25.07m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement be
2.507t, the additional amount of waterglass are 180.35L, by 2 slip casting, grouting pressure are made to reach 20.0MPa, complete drilling K5 and exist
The slip casting of second slip casting section works；
Drilling K6 is 14.33m in the volume of the injection clay cement slurry of the second slip casting section3, wherein the additional amount of cement is 2.15t,
The additional amount of waterglass is 85.98L, by 1 slip casting, grouting pressure is made to reach 18.8MPa, completes drilling K6 in the second slip casting
The slip casting work of section；
In third slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement slurry:
Drilling K1 is 484.38m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
66.137t, the additional amount of waterglass are 3025.79L, by 2 slip casting, grouting pressure are made to reach 17.6MPa, complete drilling K1
It works in the slip casting of third slip casting section；
Drilling K2 is 36.32m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
5.448t, the additional amount of waterglass are 217.92L, by 1 slip casting, grouting pressure are made to reach 21.7MPa, complete drilling K2 and exist
The slip casting of third slip casting section works；
Drilling K3 is 311.48m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
37.499t, the additional amount of waterglass are 1496.24L, by 2 slip casting, grouting pressure are made to reach 17.8MPa, complete drilling K3
It works in the slip casting of third slip casting section；
Drilling K4 is 40.32m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
6.048t, the additional amount of waterglass are 241.92L, by 1 slip casting, grouting pressure are made to reach 23.2MPa, complete drilling K4 and exist
The slip casting of third slip casting section works；
Drilling K5 is 695.48m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
89.993t, the additional amount of waterglass are 4471.12L, by 4 slip casting, grouting pressure are made to reach 17.3MPa, complete drilling K5
It works in the slip casting of third slip casting section；
Drilling K6 is 21.94m in the volume of the injection clay cement slurry of third slip casting section3, wherein the additional amount of cement be
3.291t, the additional amount of waterglass are 131.46L, by 1 slip casting, grouting pressure are made to reach 21.1MPa, complete drilling K6 and exist
The slip casting of third slip casting section works；
In the 4th slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement slurry:
Drilling K1 is 115.05m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement be
7.02t, the additional amount of waterglass are 230.1L, by 2 slip casting, grouting pressure are made to reach 21.2MPa, complete drilling K1 the
The slip casting of four slip casting sections works；
Drilling K2 is 39.94m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement be
5.991t, the additional amount of waterglass are 239.64L, by 1 slip casting, grouting pressure are made to reach 23.3MPa, complete drilling K2 and exist
The slip casting of 4th slip casting section works；
Drilling K3 is 100.78m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement be
7.796t, the additional amount of waterglass are 264.03L, by 2 slip casting, grouting pressure are made to reach 20.0MPa, complete drilling K3 and exist
The slip casting of 4th slip casting section works；
Drilling K4 is 42.39m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement is 6.36t,
The additional amount of waterglass is 254.34L, by 1 slip casting, grouting pressure is made to reach 23.3MPa, completes drilling K4 in the 4th note
Starch the slip casting work of section；
Drilling K5 is 126.48m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement be
10.096t, the additional amount of waterglass are 308.24L, by 3 slip casting, grouting pressure are made to reach 21.5MPa, complete drilling K5
It works in the slip casting of the 4th slip casting section；
Drilling K6 is 86.12m in the volume of the injection clay cement slurry of the 4th slip casting section3, wherein the additional amount of cement be
14.966t, the additional amount of waterglass are 680.56L, by 2 slip casting, grouting pressure are made to reach 23.2MPa, complete drilling K6
It works in the slip casting of the 4th slip casting section；
In the 5th slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement slurry:
Drilling K1 is 38.92m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement be
1.946t, the additional amount of waterglass are 77.84L, by 2 slip casting, grouting pressure are made to reach 24.0MPa, complete drilling K1 and exist
The slip casting of 5th slip casting section works；
Drilling K2 is 29.57m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement be
5.751t, the additional amount of waterglass are 282.66L, by 2 slip casting, grouting pressure are made to reach 23.0MPa, complete drilling K2 and exist
The slip casting of 5th slip casting section works；
Drilling K3 is 19.91m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement be
0.996t, the additional amount of waterglass are 39.82L, by 2 slip casting, grouting pressure are made to reach 22.8MPa, complete drilling K3 and exist
The slip casting of 5th slip casting section works；
Drilling K4 is 25.67m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement is 3.85t,
The additional amount of waterglass is 154.02L, by 1 slip casting, grouting pressure is made to reach 21.2MPa, completes drilling K4 in the 5th note
Starch the slip casting work of section；
Drilling K5 is 40.73m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement be
4.616t, the additional amount of waterglass are 81.46L, by 3 slip casting, grouting pressure are made to reach 24.0MPa, complete drilling K5 and exist
The slip casting of 5th slip casting section works；
Drilling K6 is 125.53m in the volume of the injection clay cement slurry of the 5th slip casting section3, wherein the additional amount of cement be
20.943t, the additional amount of waterglass are 922.54L, by 4 slip casting, grouting pressure are made to reach 25.2MPa, complete drilling K6
It works in the slip casting of the 5th slip casting section；
In the 6th slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement slurry:
Drilling K1 is 3555.86m in the volume of the injection clay cement slurry of the 6th slip casting section3, wherein the additional amount of cement be
695.891t, the additional amount of waterglass are 33669.69L, by 9 slip casting, grouting pressure are made to reach 22.6MPa, complete drilling
K1 works in the slip casting of the 6th slip casting section；
Drilling K2 is 121.91m in the volume of the injection clay cement slurry of the 6th slip casting section3, wherein the additional amount of cement be
18.282t, the additional amount of waterglass are 731.46L, by 2 slip casting, grouting pressure are made to reach 25.2MPa, complete drilling K2
It works in the slip casting of the 6th slip casting section；
Drilling K3 is 4281.26m in the volume of the injection clay cement slurry of the 6th slip casting section3, wherein the additional amount of cement be
709.958t, the additional amount of waterglass are 26533.015L, by 9 slip casting, grouting pressure are made to reach 22.4MPa, complete to bore
Hole K3 works in the slip casting of the 6th slip casting section；
Drilling K4 is 109.45m in the volume of the injection clay cement slurry of the 6th slip casting section3, wherein the additional amount of cement be
16.414t, the additional amount of waterglass are 656.7L, by 2 slip casting, grouting pressure are made to reach 24.0MPa, complete drilling K4 and exist
The slip casting of 6th slip casting section works；
Drilling K5 is 1589.61m in the volume of the injection clay cement slurry of the 6th slip casting section3, wherein the additional amount of cement be
335.489t, the additional amount of waterglass are 27803.9L, by 3 slip casting, grouting pressure are made to reach 21.8MPa, complete drilling
K5 works in the slip casting of the 6th slip casting section；
Drilling K6 is 42.07m in the volume of the injection clay cement slurry of the 6th slip casting section3, wherein the additional amount of cement is 6.31t,
The additional amount of waterglass is 252.42L, by 1 slip casting, grouting pressure is made to reach 25.4MPa, completes drilling K6 in the 6th note
Starch the slip casting work of section；
In the 7th slip casting section: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 inject clay cement slurry:
Drilling K1 is 66.579m in the volume of the injection clay cement slurry of the 7th slip casting section3, wherein the additional amount of cement be
9.988t, the additional amount of waterglass are 399.45L, by 2 slip casting, grouting pressure are made to reach 23.4MPa, complete drilling K1 and exist
The slip casting of 7th slip casting section works；
Drilling K2 is 122.87m in the volume of the injection clay cement slurry of the 7th slip casting section3, wherein the additional amount of cement be
18.432t, the additional amount of waterglass are 737.22L, by 2 slip casting, grouting pressure are made to reach 27.1MPa, complete drilling K2
It works in the slip casting of the 7th slip casting section；
Drilling K3 is 102.259m in the volume of the injection clay cement slurry of the 7th slip casting section3, wherein the additional amount of cement be
15.339t, the additional amount of waterglass are 613.6L, by 2 slip casting, grouting pressure are made to reach 23.2MPa, complete drilling K3 and exist
The slip casting of 7th slip casting section works；
Drilling K4 is 76.79m in the volume of the injection clay cement slurry of the 7th slip casting section3, wherein the additional amount of cement be
8.946t, the additional amount of waterglass are 372.54L, by 2 slip casting, grouting pressure are made to reach 26.3MPa, complete drilling K4 and exist
The slip casting of 7th slip casting section works；
Drilling K5 is 1912.215m in the volume of the injection clay cement slurry of the 7th slip casting section3, wherein the additional amount of cement be
485.955t, the additional amount of waterglass are 29561.5L, by 3 slip casting, grouting pressure are made to reach 24.0MPa, complete drilling
K5 works in the slip casting of the 7th slip casting section；
Drilling K6 is 39.36m in the volume of the injection clay cement slurry of the 7th slip casting section3, wherein the additional amount of cement be
5.904t, the additional amount of waterglass are 236.16L, by 1 slip casting, grouting pressure are made to reach 26.7MPa, complete drilling K6 and exist
The slip casting of 7th slip casting section works；
Then multiple note is carried out to drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6, multiple note injection is clay
Cement slurry:
The volume that drilling K1 injects clay cement slurry again is 24.5m3, wherein the additional amount of cement is 3.675t, and waterglass adds
Entering amount is 147L, by 1 slip casting, grouting pressure is made to reach 21.0MPa, completes the slip casting work of drilling K1；
The volume that drilling K2 injects clay cement slurry again is 54.013m3, wherein the additional amount of cement is 10.808t, waterglass
Additional amount be 540.2L, by 2 slip casting, grouting pressure is made to reach 17.1MPa, completes the slip casting work of drilling K2；
The volume that drilling K3 injects clay cement slurry again is 39.419m3, wherein the additional amount of cement is 5.913t, waterglass
Additional amount is 236.5L, by 1 slip casting, grouting pressure is made to reach 19.1MPa, completes the slip casting work of drilling K3；
Drilling K4 is 72.055m in the volume of multiple note injection clay cement slurry3, wherein the additional amount of cement is 14.411t, water glass
The additional amount of glass is 720.6L, by 2 slip casting, grouting pressure is made to reach 18.2MPa, completes the slip casting work of drilling K4；
The volume for the injection clay cement slurry that drilling K5 is infused again is 34.574m3, wherein the additional amount of cement is 5.186t, waterglass
Additional amount be 207.4L, by 1 slip casting, grouting pressure is made to reach 19.8MPa, completes the slip casting work of drilling K5；
The volume that drilling K6 injects clay cement slurry again is 58.008m3, wherein the additional amount of cement is 11.601t, waterglass
Additional amount be 580.1L, by 2 slip casting, grouting pressure is made to reach 18.4MPa, completes the slip casting work of drilling K6；
Sealing of hole finally is carried out to drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6, sealing of hole injection is single liquid
Cement slurry:
The volume that the K1 sealing of hole that drills injects single liquid cement slurry is 14.7m3, wherein the additional amount of cement is 11.157t, and salt adds
Entering amount is 55.86kg, and the additional amount of triethanolamine is 5.88kg, completes the sealing of hole work of drilling K1；
The volume that the K2 sealing of hole that drills injects single liquid cement slurry is 14.5m3, wherein the additional amount of cement is 11.01t, the addition of salt
Amount is 55.1kg, and the additional amount of triethanolamine is 5.8kg, completes the sealing of hole work of drilling K2；
The volume that the K3 sealing of hole that drills injects single liquid cement slurry is 14.21m3, wherein the additional amount of cement is 10.785t, and salt adds
Entering amount is 53.998kg, and the additional amount of triethanolamine is 5.684kg, completes the sealing of hole work of drilling K3；
The volume that the K4 sealing of hole that drills injects single liquid cement slurry is 14.1m3, wherein the additional amount of cement is 10.71t, the addition of salt
Amount is 53.62kg, and the additional amount of triethanolamine is 5.64kg, completes the sealing of hole work of drilling K4；
The volume that the K5 sealing of hole that drills injects single liquid cement slurry is 14.4m3, wherein the additional amount of cement is 10.93t, the addition of salt
Amount is 54.72kg, and the additional amount of triethanolamine is 5.76kg, completes the sealing of hole work of drilling K5；
The volume that the K6 sealing of hole that drills injects single liquid cement slurry is 14.6m3, wherein the additional amount of cement is 11.08t, the addition of salt
Amount is 55.48kg, and the additional amount of triethanolamine is 5.48kg, completes the sealing of hole work of drilling K6.
10. a kind of blind oblique vertical shaft parallel construction method of metal mine according to claim 9, which is characterized in that
When drilling to the 6th slip casting section, high artesian stratum is encountered, water yield increases suddenly or is gradually increased to 10m3/ h or more passes through
Adjustment drilling tool, adjust drilling mud, alternately the mode of slip casting is realized and is passed through for the drilling progress that is staggered and different drilling, need to use
Following method:
Adjust drilling tool: using the drill assembly aggravated, aggravating drill assembly gross mass is more than 10t, the drill assembly of the exacerbation
Including drilling rod and drill collar；The drilling rod is made of 1 89 drilling rod of 2 73 heavy weight drill pipes, 35 73 drilling rods of lower part and top,
The drill collar is 2 73 drill collars；
Adjustment drilling mud: drilling mud is done using the clay magma of higher concentration, while barite ingredient is added, reaches increase
Mud balance balances the effect of underground water hydraulic pressure, controls bore flooding quantity；The relative density of the drilling mud is according to formula (II)
It obtains:
In formula: H is height of the issue to aperture in hole, m；P is aperture water burst pressure, MPa；P0To be rushed from issue to aperture
The pressure loss that washing lotion is returned along annular gap, MPa；ρWaterFor the density of water, 1000kg/m is taken3；
Taking -50m absolute altitude is calculating benchmark, and pit shaft prospecting hole position of opening is located at+670m absolute altitude, therefore H=720m, and former pit shaft is surveyed
Hole aperture pressure P=1.93MPa is examined, pressure loss P is taken0=0.5MPa can be calculated ρ=1.338 × 10 by (II) formula3kg/
m3, water burst pressure is balanced to realize, prevents big water burst accident, while water burst situation in peep hole, drilling mud presses density 1.30
×103kg/m3It prepares；The drilling mud the preparation method comprises the following steps: in probing clay slurry, blanc fixe is added, obtains described
Drilling mud；The required amount that blanc fixe is added, obtains according to formula (III):
W1=ρ1V0(ρ2-ρ0)/(ρ1-ρ2) (Ⅲ)
In formula: W1Quality, kg is added for barite；ρ1For barite density, kg/m3, take 4000kg/m3；V0Before aggravating spar
Mud volume, m3；ρ2To aggravate the mud density after spar, kg/m3；The probing density of clay slurry is 1.10 ×
103kg/m3, the additional amount of the blanc fixe is 296.3kg；The probing clay slurry is by No. 2 water, clay 1 and clay groups
At the mass ratio of the clay 1 and the clay 2 is 1:1.2-1.5；The grain size distribution of the clay 1 are as follows: granularity is small
No. 1 gross mass 25.8% of clay is accounted in the clay of 0.002mm, granularity is more than or equal to 0.002mm and the clay less than 0.005mm accounts for
The 4.9% of No. 1 gross mass of clay, granularity is more than or equal to 0.005mm and the clay less than 0.050mm accounts for No. 1 gross mass of clay
17.2%, granularity is more than or equal to 0.050mm and the clay less than 0.075mm accounts for the 52.1% of No. 1 gross mass of clay；The clay
No. 1 plasticity index is 26.8；Content of organics in the clay 1 is less than the 3wt% of clay gross mass；The clay 2
Number grain size distribution are as follows: clay of the granularity less than 0.002mm accounts for No. 1 gross mass 17.7% of clay, and granularity is more than or equal to 0.002mm
And the clay less than 0.005mm accounts for the 11.2% of No. 1 gross mass of clay, granularity is more than or equal to 0.005mm and less than 0.050mm's
Clay accounts for the 48.4% of No. 1 gross mass of clay, and granularity is more than or equal to 0.050mm and the clay less than 0.075mm accounts for clay 1 always
The 22.7% of quality；The plasticity index of the clay 2 is 42.5；It is total that content of organics in the clay 2 is less than clay
The 3wt% of quality；
In drilling to the 6th slip casting section, be staggered drilling progress: drilling K1, drilling K2, drilling K3, drilling K4, drilling K5 and brill
Hole K6 drilling depth mutually staggers, what the K1 that drills, drilling K2, drilling K3, drilling K4, drilling K5 and drilling K6 drilling depth were staggered
Vertical distance is 8~10m；
Using different drillings alternately slip casting, then small distance drilling, by big water yield stratum, include the following steps:
(B-4-1) drilling water burst is observed and measured during creeping into the 6th slip casting section according to the water burst situation for extracting exploration in real time
Situation；
(B-4-2) when in drilling K1, drilling K3 and drilling K5 water yield increase suddenly or be gradually increased to 10m3/ h or more, immediately
Mention brill, lower stop grouting plug；Comprehensive clay cement slurry is injected to the drilling, after grouting pressure reaches requirement, stops slip casting；Pass through
Multiple slip casting keeps fracture filling more closely knit, and blocking and reduction ambient water channel reduce deep water yield, make big water yield
Become as medium and small water yield；Water yield is crept into still further below after significantly reducing, up through big water burst stratum；The comprehensive clay
Cement slurry is made of grouting clay slurry, cement and additive；The additive is waterglass, and the modulus of the waterglass is
2.8-3.4, the concentration of the waterglass are 38-42 Baume degrees；The density of the grouting clay slurry is 1.12 × 103~1.24
×103kg/m3, the additional amount of the cement is 50~300kg/m3, the additional amount of the waterglass is 2~40L/m3；The note
Slurry clay slurry is made of water, clay 1 and clay 2, and the mass ratio of the clay 1 and the clay 2 is 1:0.8-
1.2；The grain size distribution of the clay 1 are as follows: clay of the granularity less than 0.002mm accounts for No. 1 gross mass 25.8% of clay, and granularity is big
Clay in being equal to 0.002mm and less than 0.005mm accounts for the 4.9% of No. 1 gross mass of clay, granularity be more than or equal to 0.005mm and
Clay less than 0.050mm accounts for the 17.2% of No. 1 gross mass of clay, and granularity is more than or equal to 0.050mm and sticking less than 0.075mm
Soil accounts for the 52.1% of No. 1 gross mass of clay；The plasticity index of the clay 1 is 26.8；Organic matter in the clay 1 contains
Amount is less than the 3wt% of clay gross mass；The grain size distribution of the clay 2 are as follows: clay of the granularity less than 0.002mm accounts for clay 1
Number gross mass 17.7%, granularity is more than or equal to 0.002mm and the clay less than 0.005mm accounts for the 11.2% of No. 1 gross mass of clay,
Granularity is more than or equal to 0.005mm and the clay less than 0.050mm accounts for the 48.4% of No. 1 gross mass of clay, and granularity is more than or equal to
0.050mm and the 22.7% of No. 1 gross mass of clay is accounted for less than the clay of 0.075mm；The plasticity index of the clay 2 is
42.5；Content of organics in the clay 2 is less than the 3wt% of clay gross mass；
(B-4-3) then other are needed with the drilling of slip casting, according in step (B-4-2) grouting method and slip casting require note comprehensive
Mould assembly clay cement slurry；
(B-4-4) alternately drilling, different drillings alternately infuse comprehensive clay cement slurry for each drilling, reach until reaching grouting pressure
It is required that each drilling is each passed through big water burst stratum.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608661A (en) * | 2020-06-01 | 2020-09-01 | 中铁十九局集团矿业投资有限公司 | Metal mine blind inclined shaft parallel construction equipment and method thereof |
| CN115030727A (en) * | 2022-06-20 | 2022-09-09 | 长沙矿山研究院有限责任公司 | Method for treating harm of local water spraying in well shaft with installed equipment |
| CN115306471A (en) * | 2022-06-22 | 2022-11-08 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Optimized construction method of blind mixed well sliding-breaking system |
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| 向俊兴 等: "毛坪铅锌矿富水地层井筒预注浆钻孔与注浆技术", 《建井技术》 * |
| 贺文 等: "毛坪铅锌矿盲竖井井筒预注浆技术", 《金属矿山》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608661A (en) * | 2020-06-01 | 2020-09-01 | 中铁十九局集团矿业投资有限公司 | Metal mine blind inclined shaft parallel construction equipment and method thereof |
| CN115030727A (en) * | 2022-06-20 | 2022-09-09 | 长沙矿山研究院有限责任公司 | Method for treating harm of local water spraying in well shaft with installed equipment |
| CN115306471A (en) * | 2022-06-22 | 2022-11-08 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Optimized construction method of blind mixed well sliding-breaking system |
| CN115306471B (en) * | 2022-06-22 | 2023-03-10 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Optimized construction method of blind mixed well sliding-breaking system |
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| Publication number | Publication date |
|---|---|
| CN109577988B (en) | 2021-07-02 |
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