CN106285477A - Underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method - Google Patents
Underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method Download PDFInfo
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- CN106285477A CN106285477A CN201610770283.7A CN201610770283A CN106285477A CN 106285477 A CN106285477 A CN 106285477A CN 201610770283 A CN201610770283 A CN 201610770283A CN 106285477 A CN106285477 A CN 106285477A
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 239000003245 coal Substances 0.000 title claims abstract description 50
- 238000005086 pumping Methods 0.000 title claims abstract description 34
- 238000005553 drilling Methods 0.000 claims abstract description 62
- 238000005065 mining Methods 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 34
- 150000001875 compounds Chemical class 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 17
- 238000000605 extraction Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000011435 rock Substances 0.000 claims description 15
- 210000002445 nipple Anatomy 0.000 claims description 12
- 210000000481 breast Anatomy 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000011083 cement mortar Substances 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 5
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000003566 sealing material Substances 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007812 deficiency Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 55
- 238000005516 engineering process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- RFHAOTPXVQNOHP-UHFFFAOYSA-N fluconazole Chemical compound C1=NC=NN1CC(C=1C(=CC(F)=CC=1)F)(O)CN1C=NC=N1 RFHAOTPXVQNOHP-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- 238000003860 storage Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- 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
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
-
- 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
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
-
- 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
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
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Abstract
The present invention relates to a kind of underground coal mine adopt gas pumping top board and face upward and wear a layer directional hole construction method.The present invention utilizes and treats that mining face Adjacent Working Face has dug the drill site in intake, utilize the equipment such as guide's directional tool and impact compound expanding drill tool, use the compound chambering process of multi-stage rotary chambering process, slip directional drilling technique, compound directional drilling technique and impact to creep into obtain top board and face upward and wear a layer directional hole, make it enter in advance in top board mining induced fissure band and absciss layer district, and distance major diameter extends.After drilling construction, when mining face back production, roof strata by mining influence formed on face upward with top board to crack and to wear a layer directional hole and connect, adopt the raw gas of movable property to enter top board and face upward and wear a layer directional hole, thus realize adopting gas pumping and utilize, solve and currently adopt the deficiency such as aperture little, fissure zone extended distance is short, drilling efficiency is low, cost is high, long construction period that mash gas pumping drilling exists, improve and adopt gas pumping effect.
Description
Technical field
The present invention relates to a kind of directional hole construction method and equipment, belong to underground coal mine tunnel drilling field, specifically relate to
And a kind of underground coal mine adopts gas pumping top board and faces upward and wear a layer directional hole construction method.
Background technology
Coal mine gas disaster is one of main security disaster during mine construction and mining production, and its destructiveness is huge
Greatly, the biggest hidden danger and loss are brought to Safety of Coal Mine Production.In recent years, this coal-bed gas pre-extraction technology significantly reduces work
Making face coal seam gas-bearing capacity, but be as the development of colliery fully mechanized coal winning technology, the advance of the face is accelerated, during exploitation
Gas emission sharply increases, and becomes the key factor restricting some mine safety high-efficiency mining.
Major part mine uses caving method management roof at present, after seam mining, at goaf overlying rock section
On there is caving zone, fissure zone and warp damage the most successively, plane exists successively rib support the zone of influence, absciss layer
District, again compacting zone.Wherein there are two class cracks in fissure zone and absciss layer district: a class is bedseparated fissures, is to exist with rock depression
Layer and interlayer occur along slabbing gap, it makes coal seam generation dilatancy make gas release, and makes gas pressure relief gush along absciss layer
Go out；Another kind of for vertical disrumpent feelings crack, it is to wear slabbing gap with the disrumpent feelings formation of rock depression, it defines between upper and lower rock stratum watt
The passage of this flowing.Under the common effect of gas and atmospheric density difference and goaf air leaking so that face upper corner angle is attached
The substantial amounts of high concentration gas of populated with in nearly goaf top plate crack.Effect and atmospheric pressure change situation in ventilation negative pressure
Under, the gas of roof fracture band storage may increase logical by fire dam or entrance exploiting field, coal column crack or mine laneway
Wind burden and unsafe factor.
Grow theoretical, gas migration rule for goaf top plate and gas pumping need, domestic carry out numerous studies,
Define high-order goaf gas down-hole, lane pumping method, define high-order lane and two kinds of goaf gas down-holes of High Position Drilling are taken out
Mining method, but high-order lane is owing to excavation cost is high, long construction period, and its Technique Popularizing is subject to certain restrictions；High Position Drilling exists
A lot of mining area such as China Yangquan, Shenyang, iron processes, Huainan all carries out overtesting, and achieves good effect, but due to it not
Possesses drilling track observation and control ability, it is impossible to guaranteeing that drilling track extends at goaf fissure zone, drilling depth is shallow and effective hole section
Short, area coverage is little, and aperture is little, and quantities is big, and drilling efficiency is low, and long construction period and high in cost of production are not enough, efficient to ore deposit side
Mine and bring certain resistance.
Therefore, the present invention combines minery and goaf gas extraction needs during seam mining, for current colliery
Deficiency that down-hole High Position Drilling drilling method exists, a kind of underground coal mine of research design is adopted gas pumping top board and is faced upward and wear layer
Directional hole construction method, overcomes drawbacks described above.
Summary of the invention
It is an object of the invention to for current underground coal mine adopt mash gas pumping drilling have that aperture is little, fissure zone extend away from
From deficiencies such as short, drilling efficiency is low, cost is high, long construction periods, it is provided that a kind of underground coal mine is adopted on gas pumping top board
Face upward and wear a layer directional hole construction method.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals:
A kind of underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method, including:
The Seam Mining fissure zone determined is analyzed in utilization and Cai Dong absciss layer district design top board is faced upward and worn the boring of floor directional hole
Track；
Before working face extraction, treat that the Adjacent Working Face of mining face has dug intake according to described drilling track in down-hole
In the coal seam of interior drill site, perforate top board of constructing are faced upward and are worn a layer directional hole, after overlying roof strata, enter mining induced fissure band
And distance extends；
In the range of working face extraction to top board is faced upward and worn layer directional hole, utilize top board to face upward and wear a layer directional hole extraction and adopt
The gas produced；Working face extraction to top board is faced upward after wearing beyond layer directional hole scope, stops extraction.
Optimizing, above-mentioned a kind of underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method, described
Top board is faced upward and is worn a layer directional hole and include:
From coal seam perforate to getting out the collar aperture section of facing upward in coal seam, perforate inclination angle is 12-20 °, enters fixed sleeving under being used for
And moving casing, wherein, fixed sleeving internal diameter >=200mm, moving casing external diameter≤150mm；
From getting out coal seam to the directional inclination hole section entered between mining induced fissure band, its bending strength≤1 °/3m；
The orientation hold angle hole section extended along mining induced fissure band distance, its inclination angle >=0 °.
Optimizing, above-mentioned a kind of underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method, described
Top board face upward and wear layer directional hole construction quantity and be several and arrange in beaming type in the plane, and each top board is faced upward and is worn
Layer directional hole is arranged in parallel between the orientation hold angle hole section that mining induced fissure band distance extends, adjacent spacing of wells 7m-10m,
Orient hold angle hole section and treat that mining face has dug the distance >=15m of return aircourse, and being positioned at Cai Dong absciss layer district.
Optimizing, above-mentioned a kind of underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method, described
Distance between drill site is that top board is faced upward and worn the level of the orientation hold angle hole section that layer directional hole extends along mining induced fissure band distance
Projected length.
Optimizing, above-mentioned a kind of underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method,
The construction of revolution chambering process, reaming step by step is used when coal seam perforate to the collar aperture section of facing upward getting out coal seam is constructed
Entering sealing of hole sleeve pipe under after completing, then the annular gap from sealing of hole sleeve pipe Yu hole wall is inserted into exhaustor and Grouting Pipe, then uses
The extra quality sealing material of rapid hardening polyurethane and Gypsum Fibrosum closed orifices annular gap, inject cement after gypsum sets in Grouting Pipe
Slurry；Stop slip casting when exhaustor there being cement mortar flow out, wait solidifying some hours.
Guide's directional tool is used to use from getting out coal seam to the directional inclination hole section entered between mining induced fissure band
Slip directional drilling technique carries out guide's directional hole construction；
Guide's directional tool is used to use compound directional drilling along the orientation hold angle hole section that mining induced fissure band distance extends
Technique carries out guide's directional hole construction.
Optimizing, above-mentioned a kind of underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method, guide
Directional hole drilling diameter 120mm and carry out hole-enlarging hole-forming construction after reaching projected depth, uses impact compound expanding drill tool, adopts
With the compound chambering process of impact, hole-enlarging hole-forming diameter >=200mm, reaming, to after at the bottom of hole, carries brill.
Optimizing, above-mentioned a kind of underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method, described
Guide's directional tool include being sequentially connected with rock stratum lead bit, level Four curved housing screw motor, non-magnetic drilling tool, unidirectional cutoff
The outer flush drill stem of pipe nipple, hollow, rotation water feeder；Wherein: described level Four curved housing screw motor uses water under high pressure to drive, head band
There is certain angle of bend；It is fixed with aquapulse measurement while-drilling instrument in described non-magnetic drilling tool, can measure in real time in drilling process
Drilling track, and utilize and creep into and transmit signals to aperture with water under high pressure, it is thus achieved that boring drilling trajectory；Peace in unidirectional cutoff pipe nipple
Equipped with inlet non return check valve.
Optimizing, above-mentioned a kind of underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method, described
Impact compound expanding drill tool include: the guider that is sequentially connected with, spiral reaming bit, straight-through screw motor, hydraulic impacter,
The outer flush drill stem of centralizer, unidirectional cutoff pipe nipple, hollow, rotation water feeder；Wherein guider top is spherical structure, and surrounding milling is washed
There is spiral wing, and welding-on has hard alloy gauge；Straight-through screw motor uses water under high pressure to drive, and angle of bend is 0 °, directly
Logical have the external diameter of regulator, regulator and centralizer less than outside spiral reaming bit between screw motor elbow and motor assembly
Footpath.
Therefore, the present invention utilizes and treats drill site in mining face return aircourse, establishes multi-stage rotary chambering process, slides and determine
Creep into top board to the compound chambering process of drilling process, compound directional drilling technique and impact and corresponding construction equipment to face upward and wear layer
The technical scheme of directional hole, it is achieved that major diameter directional drilling construction in top board mining induced fissure band and absciss layer district, and distance is big
Diameter extends, and significantly improves and adopts gas pumping effect, and the safe and efficient back production in safeguard work face has the advantage that (1) is treating
Can construct at a distance in Adjacent Working Face intake before mining face return aircourse is non-through, save work to be adopted
The face back production preparatory period；(2) drilling diameter is big, and drilling efficiency is high；(3) boring area coverage is big, and probing workload is little, Shao Liangding
Plate is faced upward and is worn layer directional hole and can realize work surface mined out gas region extraction；(4) add boring mining induced fissure band and from
Effective hole section in floor district, improves boring utilization rate；(5) upper adjacent layers gas can be carried out extraction, to top board geology simultaneously
Structure carries out detecting, carrying out unrestrained to top board water content.
Accompanying drawing explanation
Fig. 1 is that top board is faced upward and worn a layer directional hole site plan.
Fig. 2 is that top board is faced upward and worn a layer directional hole section layout drawing.
Fig. 3 is that guide's directional tool combines connection diagram.
Fig. 4 is impact compound expanding drill tool combination connection diagram.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
In figure, treat that mining face 1, intake 2, return aircourse 3, drill site 4, top board are faced upward and wear layer directional hole 5, adopt and split
Gap band 6, Cai Dong absciss layer district 7, rock stratum lead bit 8, level Four curved housing screw motor 9, non-magnetic drilling tool 10, unidirectional cutoff pipe nipple
11, the outer flush drill stem 12 of hollow, rotation water feeder 13, guider 14, spiral reaming bit 15, straight-through screw motor 16, punching of surging
Hit device 17, centralizer 18, regulator 19, collar aperture of facing upward section a, directional inclination hole section b, orientation hold angle hole section c.
Embodiment:
Below by embodiment, in conjunction with accompanying drawing, embodiments of the present invention are described in detail.Wherein,
Embodiment:
Seeing Fig. 1, Fig. 2, a kind of colliery underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method, its
It is characterised by, comprises the following steps:
Step one: drill site 4 prepares.Treat in down-hole the Adjacent Working Face of mining face 1 dug open up in intake 2 multiple
Drill site 4, the distance of adjacent drill site 4 is faced upward equal to top board and is worn layer directional hole 5 and orient hold angle hole section c floor projection length.
Step 2: drilling design.Compose according to mine coal seam top board and deposit situation and recovery scheme, use existing modeling to divide
The methods such as analysis and theoretical formula method determine roof strata mining overburden Changing Pattern, draw roof strata section after seam mining
On fissure zone 6 scope and absciss layer district 7 scope in plane, complete top board and face upward and wear layer directional hole 5 Trajectory Design.
Step 3: collar aperture of facing upward section a is constructed.Collar aperture of facing upward section a uses the construction of revolution chambering process, i.e. first profit step by step
Creep into Φ 120mm guide's collar aperture with set pipe construction drilling tool one, then use set pipe construction drilling tool two reaming instead to Φ 153mm, then
Use set pipe construction drilling tool three reaming to Φ 215mm.After reaming completes, enter down 9mPVC sealing of hole sleeve pipe, then from PVC sealing of hole
Sleeve pipe is inserted into exhaustor and Grouting Pipe with the annular gap of hole wall, and exhaustor is inserted into sleeve bottom, and Grouting Pipe is inserted ring-type
Gap, then use the extra quality sealing material of rapid hardening polyurethane and Gypsum Fibrosum closed orifices annular gap, from note after gypsum sets
Cement mortar is injected in slurry pipe；Stop slip casting when exhaustor there being cement mortar flow out, wait solidifying 8 hours.
Step 4: guide's directional hole is constructed.Connecting opening arrangement, utilize guide's directional tool to construct, orientation is made
Inclined hole section b uses slip directional drilling construction technology, orientation hold angle hole section c to use compound directional drilling construction technology；Guide is fixed
To hole drilling diameter 120mm, after reaching projected depth, carry brill.
Step 5: hole-enlarging hole-forming.Utilize impact compound expanding drill tool combination to construct, use the compound reaming work of impact
Skill, hole-enlarging hole-forming diameter >=200mm, reaming, to after at the bottom of hole, carries brill.
Step 6: the complete hole of sleeve pipe.Under enter movable steel sleeve pipe to entering rock stratum 3m, connect aperture gas pumping device.
Step 7: region overlay.Repeat step 3～step 6, complete to treat on whole top boards of all drill sites of mining face 14
Face upward and wear layer directional hole 5, cover and treat mining face 1 return side absciss layer district 7.
Step 8: adopt gas pumping.Working face extraction to top board is faced upward in the range of wearing layer directional hole 5, utilizes on top board
Face upward and wear layer directional hole 5 extraction and adopt the gas that movable property is raw；Working face extraction to top board is faced upward after wearing beyond layer directional hole 5 scope, stops
Only extraction, movable steel sleeve pipe in extraction hole.
Described top board is faced upward and is worn perforate of facing upward from coal seam on layer directional hole 5 section, after overlying roof strata, enters
Enter mining induced fissure district and distance extends；Collar aperture section a of facing upward, directional inclination hole section b, orientation hold angle hole section c tri-can be divided into
Point.Collar aperture of wherein facing upward section a refers to from coal seam perforate to the hole section got out between coal seam, perforate inclination angle 12～20 °, under enter one
Level fixed sleeving and one-level moving casing, fixed sleeving internal diameter >=200mm, moving casing external diameter≤150mm；Directional inclination hole section
B is to get out coal seam extremely to enter the hole section between mining induced fissure band 6, hole deviation intensity≤1 °/3m；Orientation hold angle hole section c
For the hole section extended along mining induced fissure band 6 distance, inclination angle >=0 °；Top board is faced upward and is worn layer directional hole 5 and lap one another, adjacent drill site
The 4 boring laps of splice are the floor projection length sum of collar aperture section a and directional inclination hole section b of facing upward.
Described top board is faced upward and is worn layer directional hole 5 and construct quantity >=3, and particular number is according to treating mining face 1 absciss layer district 7
Width determines；Arrange in beaming type in plane, be arranged in parallel between section c of orientation hold angle hole, adjacent spacing of wells 7m～10m, with
Treat that mining face 1 has dug the distance >=15m of return aircourse 3, and be positioned at absciss layer district.
Set pipe construction BHA one described in step 3 is depended on by the outer flush drill stem 12 of Φ 120mm rock stratum lead bit 8 and hollow
Secondary connection forms；Described set pipe construction BHA two by Φ 120mm guider, the common reaming bit of Φ 120/153mm and
The outer flush drill stem 12 of hollow is sequentially connected with composition；Construction BHA three is by Φ 153mm guider, the common reaming of Φ 153/215mm
Drill bit and the outer flush drill stem 12 of hollow are sequentially connected with composition.
Described top board is faced upward to wear and is treated when layer directional hole 5 is constructed that mining face 1 does not starts exploitation, mining induced fissure band 6 and adopting
Dynamic absciss layer district 7 is for stablize rock stratum；After drilling construction completes, when mining face 1 back production, work surface top top board is by mining influence
Slump ruptures formation mining induced fissure band 6 and Cai Dong absciss layer district 7, faces upward with top board to crack on it is interior and wears layer directional hole 5 and connect,
Adopt the raw gas of movable property to ventilate and face upward along crack entrance top board under action of gravity wear layer directional hole 5 at negative pressure extraction, big flow,
Thus realize gas pumping and utilize.
Seeing Fig. 3, the guide's directional tool described in step 4 combines by Φ 120mm rock stratum lead bit 8, the curved housing of level Four
The outer flush drill stem 12 of screw motor 9, non-magnetic drilling tool 10, unidirectional cutoff pipe nipple 11, hollow, rotation water feeder 13 are sequentially connected with composition,
Described Φ 89mm level Four curved housing screw motor 9 uses water under high pressure to drive, and external diameter is Φ 89mm, and angle of bend is 1.25 °, turns round
Square >=1000Nm；It is fixed with aquapulse measurement while-drilling instrument in non-magnetic drilling tool 10, boring rail can be measured in drilling process in real time
Mark, and utilize and creep into and transmit signals to aperture with water under high pressure, it is thus achieved that boring drilling trajectory, provide reference for directional drilling；Single
In cut-off pipe nipple 11, inlet non return check valve is installed, the outer flush drill stem 12 of hollow and top board can be avoided to face upward and wear water in layer directional hole 5
From hollow, flush drill stem 12 flows backwards, and adds one every 100m；Outer flush drill stem 12 external diameter of hollow is Φ 89mm, anti-twisting property >=
35000Nm, resistance to tension >=1500kN.Described slip directional drilling technique refers in drilling process, the outer flush drill stem 12 of hollow
Not rotating, level Four curved housing screw motor 9 drives Φ 120mm rock stratum lead bit 8 to turn round detritus towards assigned direction.Described answers
Closing directional drilling and refer in drilling process, aperture rig drives the outer flush drill stem 12 of hollow to drive Φ 120mm rock stratum lead bit 8 times
While turning detritus, in hole, level Four curved housing screw motor 9 drives Φ 120mm rock stratum lead bit 8 times under water under high pressure drives
Turn detritus.
Seeing Fig. 4, the impact compound expanding drill tool described in step 5 combines by guider 14, spiral reaming bit 15, leads directly to
The outer flush drill stem 12 of screw motor 16, hydraulic impacter 17, centralizer 18, unidirectional cutoff pipe nipple 11, hollow, rotation water feeder 13 depend on
Secondary connection forms；Wherein guider 14 length >=0.4m, external diameter is 110mm, and top is spherical structure, and circular knife has been washed in surrounding milling
The wing, and welding-on has hard alloy gauge；Spiral reaming bit 15 external diameters >=200mm；Straight-through screw motor 16 uses high pressure water drive
Dynamic, external diameter is 89mm, and angle of bend is 0 °, has regulator 19 between its elbow and motor assembly, the external diameter ratio of regulator 19
The little 1mm of external diameter of spiral reaming bit 15；The external diameter 1mm less than the external diameter of spiral reaming bit 15 of centralizer 18；Unidirectional cutoff
Pipe nipple 11 adds one every 100m.Described impact is combined chambering process and refers in reaming procedure, and aperture rig drives and in hole
Straight-through screw motor 16 drives and combines, and while spiral reaming bit 15 turns round detritus, in hole, hydraulic impacter 17 drives spiral
Reaming bit 15 impacts detritus.
Treat that mining face 1, intake 2, return aircourse 3, drill site 4, top board are faced upward and worn although the most more employing
Floor directional hole 5, mining induced fissure band 6, Cai Dong absciss layer district 7, rock stratum lead bit 8, level Four curved housing screw motor 9, non-magnetic drilling tool
10, unidirectional cutoff pipe nipple 11, the outer flush drill stem 12 of hollow, rotation water feeder 13, guider 14, spiral reaming bit 15, straight-through spiral shell
Bar motor 16, hydraulic impacter 17, centralizer 18, regulator 19, collar aperture of facing upward section a, directional inclination hole section b, orientation hold angle
The terms such as hole section c, but it is not precluded from using the probability of other term.Use these terms to be only used to more easily to describe
With the essence explaining the present invention；It is all contrary with spirit of the present invention for being construed as any additional restriction.
Claims (8)
1. a underground coal mine is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method, it is characterised in that including:
The Seam Mining fissure zone (6) determined is analyzed in utilization and Cai Dong absciss layer district (7) design top board is faced upward and worn floor directional hole (5)
Drilling track；
Before working face extraction, treat that the Adjacent Working Face of mining face (1) has dug intake according to described drilling track in down-hole
(2) in the coal seam of interior drill site (4), perforate top board of constructing are faced upward and are worn a layer directional hole (5), and after overlying roof strata, entrance is adopted
Dynamic fissure zone (6) distance extend；
In the range of working face extraction to top board is faced upward and worn a layer directional hole (5), utilize top board to face upward and wear a layer directional hole (5) extraction and adopt
The gas that movable property is raw；Working face extraction to top board is faced upward after wearing beyond a layer directional hole (5) scope, stops extraction.
A kind of underground coal mine the most according to claim 1 is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method,
It is characterized in that, described top board is faced upward and is worn a layer directional hole (5) and including:
From coal seam perforate to getting out the collar aperture section of facing upward in coal seam, perforate inclination angle is 12-20 °, enters fixed sleeving and work under being used for
Dynamic sleeve pipe, wherein, fixed sleeving internal diameter >=200mm, moving casing external diameter≤150mm；
From getting out coal seam to the directional inclination hole section entered between mining induced fissure band, its bending strength≤1 °/3m；
The orientation hold angle hole section extended along mining induced fissure band distance, its inclination angle >=0 °.
A kind of underground coal mine the most according to claim 1 is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method one
Plant down-hole and adopt gas pumping method, it is characterised in that described top board is faced upward and worn a layer directional hole (5) construction quantity is several
And arrange in beaming type in the plane, and each top board is faced upward and worn what a layer directional hole (5) extended along mining induced fissure band distance
It is arranged in parallel between the section of orientation hold angle hole, adjacent spacing of wells 7m-10m, orient hold angle hole section and treat that mining face (1) is dug back
Distance >=the 15m in air way road (3), and it is positioned at Cai Dong absciss layer district (7).
A kind of underground coal mine the most according to claim 1 is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method,
It is characterized in that, the distance between described drill site (4) be top board face upward wear a layer directional hole (5) along mining induced fissure band distance extend
The floor projection length of orientation hold angle hole section.
A kind of underground coal mine the most according to claim 1 is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method,
It is characterized in that,
Using revolution chambering process construction step by step when coal seam perforate to the collar aperture section of facing upward getting out coal seam is constructed, reaming completes
Entering sealing of hole sleeve pipe under Hou, then the annular gap from sealing of hole sleeve pipe Yu hole wall is inserted into exhaustor and Grouting Pipe, then uses rapid hardening
The extra quality sealing material of polyurethane and Gypsum Fibrosum closed orifices annular gap, inject cement mortar after gypsum sets in Grouting Pipe；When
Stop slip casting when exhaustor having cement mortar flow out, wait solidifying some hours.
Guide's directional tool is used to use slip from getting out coal seam to the directional inclination hole section entered between mining induced fissure band
Directional drilling technique carries out guide's directional hole construction；
Guide's directional tool is used to use compound directional drilling technique along the orientation hold angle hole section that mining induced fissure band distance extends
Carry out guide's directional hole construction.
A kind of underground coal mine the most according to claim 5 is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method,
It is characterized in that guide directional hole drilling diameter 120mm and carry out hole-enlarging hole-forming construction after reaching projected depth uses impact
Compound expanding drill has, and uses the compound chambering process of impact, hole-enlarging hole-forming diameter >=200mm, and reaming, to after at the bottom of hole, carries brill.
A kind of underground coal mine the most according to claim 5 is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method,
It is characterized in that, described guide's directional tool includes rock stratum lead bit (8), the level Four curved housing screw motor being sequentially connected with
(9), non-magnetic drilling tool (10), unidirectional cutoff pipe nipple (11), the outer flush drill stem (12) of hollow, rotation water feeder (13)；Wherein: described four
The curved housing screw motor (9) of level uses water under high pressure to drive, and head is with certain angle of bend；Fix in described non-magnetic drilling tool (10)
There is aquapulse measurement while-drilling instrument, drilling track can be measured in drilling process in real time, and utilization is crept into signal with water under high pressure
It is transferred to aperture, it is thus achieved that boring drilling trajectory；Unidirectional cutoff pipe nipple is provided with inlet non return check valve in (11).
A kind of underground coal mine the most according to claim 6 is adopted gas pumping top board and is faced upward and wear a layer directional hole construction method,
It is characterized in that, described impact compound expanding drill tool includes: the guider (14) that is sequentially connected with, spiral reaming bit (15),
The outer flush drill stem (12) of straight-through screw motor (16), hydraulic impacter (17), centralizer (18), unidirectional cutoff pipe nipple (11), hollow,
Rotate water feeder (13)；Wherein guider (14) top is spherical structure, and spiral wing has been washed in surrounding milling, and welding-on has hard to close
Gold gauge；Straight-through screw motor (16) uses water under high pressure to drive, and angle of bend is 0 °, straight-through screw motor (16) elbow and horse
Reaching and have regulator (19) between assembly, the external diameter of regulator (19) and centralizer (18) is less than outside spiral reaming bit (15)
Footpath.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6688702B1 (en) * | 2002-12-16 | 2004-02-10 | Grigori A. Abramov | Borehole mining method |
| CN101251028A (en) * | 2008-04-03 | 2008-08-27 | 淮南矿业(集团)有限责任公司 | Method for taking out and picking high gassy seam group dislodging gob-side entry retaining Y type ventilated decompression firedamp |
| CN102031950A (en) * | 2010-12-06 | 2011-04-27 | 煤炭科学研究总院西安研究院 | Hole-forming process method for comb gas extraction borehole in coal seam roof |
| CN102226413A (en) * | 2011-05-24 | 2011-10-26 | 中国矿业大学 | Gas extraction method of cross hole drilling area of gas discharge laneway |
| CN103061798A (en) * | 2012-12-30 | 2013-04-24 | 中北大学 | Method for extracting coal bed methane through down-hole bedding long borehole consecutive cave building |
| CN104775787A (en) * | 2015-02-27 | 2015-07-15 | 河南工程学院 | Hydraulic fracturing crossing hole pitchup hole sealing method of broken surrounding rock |
| CN104832208A (en) * | 2015-03-25 | 2015-08-12 | 宁夏煤炭勘察工程公司 | Anti-collapse method for long-distance horizontal hole drilling in soft coal seam of underground coal mine |
-
2016
- 2016-08-30 CN CN201610770283.7A patent/CN106285477B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6688702B1 (en) * | 2002-12-16 | 2004-02-10 | Grigori A. Abramov | Borehole mining method |
| CN101251028A (en) * | 2008-04-03 | 2008-08-27 | 淮南矿业(集团)有限责任公司 | Method for taking out and picking high gassy seam group dislodging gob-side entry retaining Y type ventilated decompression firedamp |
| CN102031950A (en) * | 2010-12-06 | 2011-04-27 | 煤炭科学研究总院西安研究院 | Hole-forming process method for comb gas extraction borehole in coal seam roof |
| CN102226413A (en) * | 2011-05-24 | 2011-10-26 | 中国矿业大学 | Gas extraction method of cross hole drilling area of gas discharge laneway |
| CN103061798A (en) * | 2012-12-30 | 2013-04-24 | 中北大学 | Method for extracting coal bed methane through down-hole bedding long borehole consecutive cave building |
| CN104775787A (en) * | 2015-02-27 | 2015-07-15 | 河南工程学院 | Hydraulic fracturing crossing hole pitchup hole sealing method of broken surrounding rock |
| CN104832208A (en) * | 2015-03-25 | 2015-08-12 | 宁夏煤炭勘察工程公司 | Anti-collapse method for long-distance horizontal hole drilling in soft coal seam of underground coal mine |
Cited By (23)
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