CN109372494A - A kind of hole structure and method of the monitoring of layering underground water bit length phase - Google Patents

A kind of hole structure and method of the monitoring of layering underground water bit length phase Download PDF

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Publication number
CN109372494A
CN109372494A CN201811505227.6A CN201811505227A CN109372494A CN 109372494 A CN109372494 A CN 109372494A CN 201811505227 A CN201811505227 A CN 201811505227A CN 109372494 A CN109372494 A CN 109372494A
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CN
China
Prior art keywords
hole
water
long
drilling
elevation
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Pending
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CN201811505227.6A
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Chinese (zh)
Inventor
郑克勋
胡大儒
朱代强
吴述彧
李鹏飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Hydropower Consulting Group Guiyang Geotechnical Engineering Co Ltd
PowerChina Guiyang Engineering Corp Ltd
Original Assignee
China Hydropower Consulting Group Guiyang Geotechnical Engineering Co Ltd
PowerChina Guiyang Engineering Corp Ltd
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Application filed by China Hydropower Consulting Group Guiyang Geotechnical Engineering Co Ltd, PowerChina Guiyang Engineering Corp Ltd filed Critical China Hydropower Consulting Group Guiyang Geotechnical Engineering Co Ltd
Priority to CN201811505227.6A priority Critical patent/CN109372494A/en
Publication of CN109372494A publication Critical patent/CN109372494A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/04Measuring depth or liquid level
    • E21B47/047Liquid level
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/127Packers; Plugs with inflatable sleeve
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/13Methods or devices for cementing, for plugging holes, crevices, or the like
    • E21B33/138Plastering the borehole wall; Injecting into the formation

Abstract

The invention discloses the hole structure and method of a kind of layering underground water bit length phase monitoring, including drilling, drilling is by successively penetrating drilling top water-bearing layer, drilling top relative water resisting layer, the water-bearing layer for needing long-term observation water level, foot of hole stratum under upper;Long view hole section or less hole section concrete occluding body is equipped in foot of hole bottom, it is located at the chimney filter for needing the hole section in the water-bearing layer of long-term observation water level to be equipped with long view hole section in the section concrete occluding body of hole below long view hole section, hole section above chimney filter is equipped with the pvc pipe of long view hole section or more, pvc pipe more than long view hole section is located at the concrete occluding body closure that in drilling and its gap between drilling is equipped with long view hole section or more, and the concrete occluding body bottom more than long view hole section is equipped at the top of water-swellable adhesive tape and chimney filter and contacts.The present invention has not to be limited by hole depth, and water-stagnating effect is more preferable, and durability is higher, and the operation is more convenient, the more low advantage of cost.

Description

A kind of hole structure and method of the monitoring of layering underground water bit length phase
Technical field
The present invention relates to a kind of hole structures of layering underground water bit length phase monitoring, belong to Hydrogeologic Survey, geology Technical field.
Technical background
Engineering investigation, especially hydraulic and hydroelectric engineering, underground engineering, environmental project prospecting in need to find out what engineering was related to Hydrogeologic condition, level of ground water therein are a basic hydrogeological elements.In a uniform ground water regime, The different location of seepage field, level of ground water is variation, and geological structure is complicated variation, due to topography and geomorphology, stratum Distribution, the difference of tectonic association, level of ground water are even more complicated and changeable.A drilling in prospecting, the level of ground water of different depth It will change, and may increase with drilling depth and increase or reduce.In drilling process, can make full use of drilling equipment into Row separates, and observes inner and outer pipes water level.It " is visited in the deep karst leakage channel based on drilling rod inner tube water level in the patent of the completions such as Zheng Kexun In geodesic structure (CN201620917447.X) ", observation method and the application of the inner and outer pipes water level in drilling process are established in detail.
But after the completion of drilling, drilling equipment is moved away from, it is also necessary to be carried out inner and outer pipes water level long-term observation, be needed to adopt drilling Measure is fetched protection, chimney filter is divided into, the water level of some hole section of observation drilling needs to completely cut off the underground water of upper part and lower part, only The underground water of the specific hole section is allowed to enter chimney filter.
In patent " a kind of artesian water water-level observation well construction and the method for multilayer water-level observation for magnifying completions of heap of stone equal (CN201610735751.7) " a kind of, patent " hydrogeology multi-layer Underground Water water level observation device of Wang Wenbin etc. (CN201621461516.7) ", in the patent " multilayer water-level observation well construction (CN201520597584.5) " of Qu Chengsong etc., It possesses some special knowledge to multilayer water-level observation, but is limited vulnerable to hole depth, instrument installation difficulty is big, and water-stagnating effect is directly by mounting process It influences.
Summary of the invention
It is an object of the invention to systems to solve under complex karst hydrogeologic condition, multiple water-bearing stratum underground water bit lengths Phase observation problem, and analyzed according to Various Seasonal, different engineerings position, a large amount of water-level observation data in different water cut rock stratum Underground karst developmental state is derived, provides more structurally sound foundation for engineering optimization and processing scheme, cost is reduced to reach, mentions High efficiency, the target for reducing accident.
The case where water barrier aqueous for multiple karst distributes alternately, conventional drilling can only observe comprehensive water level, Wu Faguan Each water-bearing layer actual water inside position is surveyed, thus is also just unable to judge accurately underground water to the influence area of engineering construction and influences journey Degree, and then effective treatment measures can not be formulated.Phase of exploration early period of engineering construction can specifically find out engineering using the present invention Place karsts developing area situation, and foundation is provided for later period prospecting, design, arrangement and method for construction optimization, for by karst or underground water shadow Loud built engineering, using position and scale, the groundwater occurrence feature and underground water of the invention for specifically finding out karsts developing area With the relationship of structural interaction etc., and then targetedly propose effective treatment measures.
The present invention adopts the following technical scheme that realization:
A kind of hole structure of layering underground water bit length phase monitoring, including drilling, drilling is by successively penetrating drilling under upper Top water-bearing layer, drilling top relative water resisting layer, the water-bearing layer for needing long-term observation water level, foot of hole stratum;At drilling bottom It is equipped with long view hole section or less hole section concrete occluding body in portion's bottom, is located in the section concrete occluding body of hole below long view hole section The hole section in the water-bearing layer of long-term observation water level is needed to be equipped with the chimney filter of long view hole section, the hole section above chimney filter is equipped with long view hole section Above pvc pipe, pvc pipe more than long view hole section is located in drilling and its gap between drilling be equipped with long view hole section with On concrete occluding body block, concrete occluding body bottom more than long view hole section is equipped with water-swellable adhesive tape and chimney filter top Portion's contact.
Further, the aperture of the drilling be greater than chimney filter and for into drilling slip casting form the long following hole section of view hole section The sum of the diameter of grouting pipe of concrete occluding body more than concrete occluding body and long view hole section.
Further, the thickness of the water-swellable adhesive tape adds pvc pipe diameter to be less than the diameter to drill.
The construction method of the hole structure of layering underground water bit length phase monitoring, comprising the following steps:
S1, pore-forming simultaneously determine underground water bit length view hole section;Drilling construction is normally completed according to general exploratory bore-hole, drilling Aperture is greater than the sum of chimney filter and the diameter of grouting pipe;It determines the water-bearing layer for needing long-term observation water level, determines and need long-term see The lower part elevation a, top elevation b of hole section where surveying the water-bearing layer of water level;
S2 blocks the drilling under long view hole section;Tripping in grouting pipe is pumped into cement mortar using slush pump to bottom hole, Cement mortar rises to elevation a from bottom hole, before cement mortar initial set, grouting pipe is proposed to drill, waits cement mortar After final set, the long view hole section of the hole section among foot of hole stratum or less hole section concrete occluding body is formed;
S3, lower chimney filter;Underlying pvc pipe section by section;Elevation b respectively saves joint to aperture section pvc pipe and seals;Elevation b and elevation c Between wind water-swellable adhesive tape;Grouting pipe is bound except elevation c to pvc pipe between aperture, is transferred together with pvc pipe;
S4 closes the drilling on long view hole section;Treatment water expansion adhesive tape sufficiently reacted with water, expansion reach pvc pipe and Sealing effect between borehole wall connects grouting pipe using slush pump, is pumped into micro-expansion cement mortar, and cement mortar is from elevation c Locate conduit bottom to rise, until slurry is returned in aperture;
S5, water level is long to be seen;After water level balance, water-level gauge observation is transferred by pvc pipe inner tube and needs long-term observation water level Water-bearing layer where hole section level of ground water.
Engineering ground different water cut layer level of ground water distribution occasion can be specifically found out using the present invention, and then speculates karst hair Situation is educated, provides foundation for later period prospecting, design, arrangement and method for construction optimization, or to the built engineering by karst or influence on groundwater, Targetedly propose corresponding treatment measures.Compared with prior art, the usage range that the present invention has is wider, not by hole depth Limitation, water-stagnating effect is more preferable, and durability is higher, and the operation is more convenient, the more low advantage of cost.
Detailed description of the invention
Fig. 1 is borehole sealing schematic diagram under long view hole section;
Fig. 2 is that long view hole section transfers chimney filter schematic diagram;
Fig. 3 is borehole sealing schematic diagram on long view hole section;
Fig. 4 is BZK1, BZK2 drilling water level observation chart in embodiment 1;
Fig. 5 is BZK3, BZK4 drilling water level observation chart in embodiment 1.
Description of symbols: 1- drilling top water-bearing layer, 2- drilling top relative water resisting layer, 3- need long-term observation water level Water-bearing layer, 4- foot of hole stratum, hole section concrete occluding body below 5- long view hole section, 6- grouting pipe, 7- drilling, 8- mud Stock pump, 9- chimney filter, 10- water-swellable adhesive tape, pvc pipe more than 11- long view hole section, coagulation grave more than 12- long view hole section Stifled body.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1-Figure 3, in the present invention is implemented, probing is completed to need to carry out a certain hole section to be layered underground water bit length Phase observation, needs to take safeguard measure to drilling 7, divides into chimney filter 9, and the underground water on top is completely cut off, and only allows the ground of specific hole section It is lauched and enters chimney filter 9.Specifically, the construction method of the structure the following steps are included:
Step 1, pore-forming simultaneously determine underground water bit length view hole section.7 construction of drilling is normally completed according to general exploratory bore-hole, The aperture of drilling 7 is greater than the sum of chimney filter 9 and the diameter of grouting pipe 6.Determine the water-bearing layer 3 for needing long-term observation water level, accordingly 3 place hole section of stratum lower part elevation a, top elevation b.
Step 2 blocks the drilling 7 under long view hole section.Tripping in grouting pipe 6 is to bottom hole, using slush pump 8 with appropriate Pressure is pumped into cement mortar, and cement mortar rises to elevation a from bottom hole, and before cement mortar initial set, grouting pipe 6 is proposed Drilling 7 after waiting cement mortar final set, forms the long view hole section among foot of hole stratum 4 or less hole section concrete occluding body 5.As shown in Figure 1.
Step 3, lower chimney filter 9.Underlying pvc pipe 11 section by section, wherein the underground water bit length view hole section between elevation a and elevation b It need to drill and guarantee that underground water enters, is i.e. chimney filter 9.To aperture section pvc pipe 11, respectively section joint guarantees to seal elevation b.
Water-swellable adhesive tape 10 is wound between elevation b and elevation c, the thickness of water-swellable adhesive tape 10 adds 11 diameter of pvc pipe Less than 7 diameters that drill, guarantee that pvc pipe 11 can be transferred smoothly, the expansion rate of water-swellable adhesive tape 10 meets elevation b and the hole elevation c Seal request between 7 hole walls of pvc pipe 11 and drilling of section, the time of 10 water-swellable of water-swellable adhesive tape meet pvc pipe 11 The time requirement of processing and decentralization.As shown in Figure 2.
Grouting pipe 6 is bound except elevation c to pvc pipe 11 between aperture, is transferred together with pvc pipe 11.
Step 4 closes the drilling on long view hole section.Treatment water expansion adhesive tape 10 is sufficiently reacted with water, and expansion reaches Sealing effect connects grouting pipe 6 using slush pump 8 between 7 hole walls of pvc pipe 11 and drilling, is pumped into micro-expansion cement mortar, water Cement mortar rises from conduit bottom from elevation c, until slurry is returned in aperture.
Step 5, water level is long to be seen.After water level balance, water-level gauge observation is transferred by 11 inner tube of pvc pipe and needs long-term see Survey the level of ground water of the 3 place hole section of water-bearing layer of water level.
Embodiment 1:
The present invention has been applied in the seepage analysis of general trouble River Reservoir riverbed deep longitudinal direction, solves general trouble river water Kucheng library opinion Most critical, most complicated link in card problem, details are as follows:
(1) reservoir engineering characteristic
General trouble River Reservoir is located at the town the Zhong Ying village Long Xiang, is valley type reservoir, intends recommending arch dam scheme, height of dam 90m is normal to store Water level 1035.0m, the long 1.42km of mainstream return water, the dribble tributary long 1.12km of return water, corresponding 4,730,000 m of storage capacity3, it is that IV etc. is small (1) type engineering.
(2) Karst Hydrogeological Conditions brief introduction
General trouble River Reservoir is located at the Lower Triassic Yongning town group first segment second layer (T of middle battalion's synclinal shaft1yn1-2) (high 910~1012m of journey) thickness 93m thin folder medium bed marl folder mud stone on, under (818~920m of elevation) be thickness 102m First layer (T1yn1-1) medium bed shape limestone, then under (elevation 818m or less) be Lower Triassic fly celestial being pass group (T1F) flagstone With mud shale alternating layers.In seek to tiltedly toppling to reverse to oblique, axle portion upstream is to the oblique northwest (NW) wing, N30 ° of the attitude of rocks~40 °, NW It 70 °~85 ° of ∠, reverses area and is inclined to upstream, paraxial area of portion is inclined to downstream;Dam site and downstream are to the oblique east southeast wing, the attitude of rocks N30 °~40 °, 5 °~10 ° of NW ∠, slow upstream of inclining.It is drafting at the 985m of dam site downstream, river water all slips into underground by K5 blind valley Underground stream is formed, underground stream is about 1217m, flows out in K7 karst big spring, forms K5-K7 karst.Pipeline import and export elevation difference For 913.4m and 851.0m, water-head 62.4m forms 5.13% hydraulic gradient.
Suspicious leakage passage are as follows: library water is along T1yn1-1Limestone formation bypasses T from Ku Penqu1yn1-2Bottom circle downstream K5 blind valley And the riverbed deep of karst longitudinally leaks.
(3) engineer application of the present invention
To examine whether to choose axis of dam right bank middle of the river hole BZK1 (hole depth 110m), dam there are above-mentioned suspicious leakage passage Right bank middle of the river hole BZK3 (hole depth 207m) carries out hole structure construction according to the present invention at the 300m of location downstream, to carry out layering water level Long-term observation (inner tube water level);The left bank middle of the river at selection axis of dam left bank middle of the river hole BZK2 (hole depth 109m), dam site downstream 300m Hole BZK4 (hole depth 208m) carries out conventional comprehensive water-level observation (outer tube water level), so as to comparative analysis.Each drilling water level observation knot Fruit is as shown in Figure 4, Figure 5.
No. BZK3 drilling depth 207m, wherein 0~20m is coating (water-bearing layer), and 20~57.5m is T1yn1-2In thin folder Thick-layer marl presss from both sides mud stone (water barrier), and 57.5~202m is T1yn1-1Medium bed shape limestone (water-bearing layer), 202~207m are T1f Sandstone and mud shale alternating layers (water barrier).
No. BZK1 drilling depth 110m, wherein 0~30m is coating, and 30~77.6m is T1yn1-2Thin folder medium bed plaster Rock presss from both sides mud stone, and 77.6~110m is T1yn1-1Medium bed shape limestone.
It can obtain according to Fig. 4, Fig. 5 and such as draw a conclusion:
(1) T is not punched in BZK3 hole depth 55m on 12~May 16 May, drilling1yn1-2Water proof stratum, surveyed water level are to cover Water level in cap rock.
May, 17~June 13, drilled into T1yn1-1Water-bearing layer, and hole structure processing has been carried out according to the present invention, To ensure surface river water and coating internal water and T1yn1-1Water isolation in layer, surveyed water level is T1yn1-1In water-bearing stratum Real water level is higher than T it can be seen from the figure that the water level is 51.5m1yn1-1With T1yn1-2Stratum line of demarcation, if T1yn1-1Development in layer Karst, the water level will be less than status level, be not above above-mentioned stratum line of demarcation.
(2) 14~July 9 June is flood season, and by the two sides recharge of ground water, two hole BZK1, BZK3 measures T1yn1-1In layer Real water level, which exists, to be jumped up, and because having pressure-bearing property, which is even higher than BZK2, BZK4 and surveys comprehensive water level, If T1yn1-1Karst is developed in layer, which will not continue to rise.
(3) combine institute's score layer water level achievement of the present invention, drilling different depth water temperature achievement, each spring point and pipeline flow real The comprehensive judgements such as Electromagnetic CT test result between achievement, hole are surveyed, there is no library water along T for this engineering1yn1-1Limestone formation, from library basin Area bypasses T1yn1-2The riverbed deep longitudinal direction leakage problems of bottom circle downstream K5 blind valley and karst.
It is above specific application example of the invention, there are other embodiments of the invention, all to use equivalent replacement Or the technical solution that equivalent transformation is formed, it all falls within protection scope of the presently claimed invention.

Claims (4)

1. a kind of hole structure of layering underground water bit length phase monitoring, it is characterised in that: including drilling (7), drill (7) by it is upper it Under successively penetrate drilling top water-bearing layer (1), drilling top relative water resisting layer (2), need the water-bearing layer of long-term observation water level (3), foot of hole stratum (4);Long view hole section or less hole section concrete occluding body (5) is equipped in foot of hole bottom (4), Being located in hole section concrete occluding body (5) below long view hole section needs the hole section in the water-bearing layer (3) of long-term observation water level to be equipped with length The chimney filter (9) of view hole section, hole section above chimney filter (9) are equipped with the pvc pipe (11) of long view hole section or more, more than long view hole section Pvc pipe (11) is located in drilling (7) and its gap between drilling (7) is equipped with the concrete occluding body of long view hole section or more (12) it blocks, concrete occluding body (12) bottom more than long view hole section is equipped with water-swellable adhesive tape (10) and chimney filter (9) and pushes up Portion's contact.
2. the hole structure of layering underground water bit length phase monitoring according to claim 1, it is characterised in that: the drilling (7) aperture be greater than chimney filter (9) and for into drilling slip casting form long view hole section or less hole section concrete occluding body (5) and long The sum of the diameter of the grouting pipe (6) of concrete occluding body (12) more than view hole section.
3. the hole structure of layering underground water bit length phase monitoring according to claim 1, it is characterised in that: the chance water is swollen The thickness of swollen adhesive tape (10) adds pvc pipe (11) diameter less than the diameter of drilling (7).
4. a kind of construction party of the hole structure of the layering underground water bit length phase monitoring as described in any one of claim 1-3 Method, it is characterised in that the following steps are included:
S1, pore-forming simultaneously determine underground water bit length view hole section;Drilling (7) construction is normally completed according to general exploratory bore-hole, is drilled (7) Aperture be greater than chimney filter (9) and grouting pipe (6) the sum of diameter;Determine the water-bearing layer for needing long-term observation water level, determining needs The lower part elevation a, top elevation b of hole section where wanting the water-bearing layer of long-term observation water level;
S2 blocks the drilling (7) under long view hole section;Tripping in grouting pipe (6) is pumped into cement using slush pump (8) to bottom hole Mortar, cement mortar rise to elevation a from bottom hole, and before cement mortar initial set, grouting pipe (6) are proposed drilling (7), etc. After cement mortar final set, the long view hole section of the hole section among foot of hole stratum or less hole section concrete occluding body is formed;
S3, lower chimney filter (9);Underlying pvc pipe (11) section by section;Elevation b is respectively sealed section joint to aperture section pvc pipe (11);Elevation b Water-swellable adhesive tape (10) are wound between elevation c;Grouting pipe (6) are bound except elevation c to pvc pipe between aperture (11), It is transferred together with pvc pipe (11);
S4 closes the drilling (7) on long view hole section;Treatment water expansion adhesive tape (10) is sufficiently reacted with water, and expansion reaches pvc pipe (11) sealing effect connects grouting pipe (6), is pumped into micro-expansion cement mortar using slush pump (8) between drilling (7) hole wall, Cement mortar rises from conduit bottom from elevation c, until slurry is returned in aperture;
S5, water level is long to be seen;After water level balance, water-level gauge observation is transferred by pvc pipe (11) inner tube and needs long-term observation water level Water-bearing layer (3) where hole section level of ground water.
CN201811505227.6A 2018-12-10 2018-12-10 A kind of hole structure and method of the monitoring of layering underground water bit length phase Pending CN109372494A (en)

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Application Number Priority Date Filing Date Title
CN201811505227.6A CN109372494A (en) 2018-12-10 2018-12-10 A kind of hole structure and method of the monitoring of layering underground water bit length phase

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112253256A (en) * 2020-11-26 2021-01-22 安徽省煤田地质局勘查研究院 Mine ground drilling non-sleeve multi-aquifer underground water level monitoring system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112253256A (en) * 2020-11-26 2021-01-22 安徽省煤田地质局勘查研究院 Mine ground drilling non-sleeve multi-aquifer underground water level monitoring system

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