CN104234660B - Filling method for gas extraction hole - Google Patents
Filling method for gas extraction hole Download PDFInfo
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- CN104234660B CN104234660B CN201410445499.7A CN201410445499A CN104234660B CN 104234660 B CN104234660 B CN 104234660B CN 201410445499 A CN201410445499 A CN 201410445499A CN 104234660 B CN104234660 B CN 104234660B
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- gas pumping
- gas
- sleeve pipe
- hole
- pipe
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Abstract
The invention discloses a filling method for a gas extraction hole. A gas extraction casing with an inner suction pipe is placed in the gas extraction hole, wherein a filling material is arranged between the gas extraction casing and the inner suction pipe, and is powered by the high-pressure gas of an underground compressed air pipeline to be injected into the extraction casing through an injection spraying pipe parallel to the inner suction pipe in the gas extraction casing; one end of the injection spraying pipe is connected with an external gas-material mixer in a sealed way, and the other end of the injection spraying pipe is connected with a material baffle plate of the gas extraction casing; a plugging material is also arranged in the orifice part of the gas extraction casing. According to the technical scheme, the filling material is arranged between the gas extraction casing and the inner suction pipe, so that support to the gas extraction hole is enhanced, the gas extraction hole is prevented from collapse, and the extraction of coal-bed gas is ensured.
Description
Technical field
A kind of the invention belongs to mine mining field, it is more particularly related to fill method in gas pumping hole.
Background technology
Hole pumping and mining gas has become a kind of main method of coal mine gas release release, complex for occurrence condition
Coal seam, such as weak seam, its gas pumping hole easily caves in closure, and gas drainage system is difficult in maintenance, prior art
The method collapsing in preventing and treating coal bed gas extraction hole mainly adopts macrovoid packing material to fill drainage holes, and this filling mode is general
All over using hand-stuff method, not being only filled with wasting time and energy, efficiency is low, and compactedness is not enough simultaneously, especially up gas pumping hole
In hand-stuff be difficult to carry out, lead to that gas pumping hole utilization rate is low, extracting result is undesirable, even results in gas pumping hole and collapses
Hole.
Content of the invention
The technical problem to be solved is to provide a kind of compactedness high, it is to avoid the gas of gas pumping hole collapse hole is taken out
Adopt the fill method in hole.
To achieve these goals, the technical scheme that the present invention takes is a kind of filling in the gas pumping hole being provided
Method, gas pumping in the hole places the gas pumping sleeve pipe with suction inner tube, between this gas pumping sleeve pipe and suction inner tube
Setting packing material, described packing material is with the gases at high pressure of underground pressure air pipeline for power by being placed in gas pumping sleeve pipe
In the interior material feeding jet pipe injection extraction sleeve pipe be arrangeding in parallel with suction inner tube, one end of material feeding jet pipe and external gas material blender
It is tightly connected, the backgauge part that the other end is arranged with gas pumping sleeve pipe is connected, gas pumping collar aperture oral area is also filled with blocking
Material.
A kind of fill method in gas pumping hole disclosed by the invention, backgauge part is the nozzle sealing being placed in material feeding jet pipe
The striker plate that the end of baffle plate and material feeding jet pipe is detachably connected with it, the end of striker plate is additionally provided with clamp button of the spring valve.
A kind of fill method in gas pumping hole disclosed by the invention, striker plate is to threaded with material feeding jet pipe, filling
After material fills gas pumping sleeve pipe, to sealing at baffle plate, rotation material feeding jet pipe draws it out packing material extruding striker plate, bullet
Spring buckle valve is closed.
A kind of fill method in gas pumping hole disclosed by the invention, packing material is the porous ceramicss of 10～15mm
Grain.
A kind of fill method in gas pumping hole disclosed by the invention, the uniform mesh of side wall of gas pumping sleeve pipe, mesh
A diameter of 8mm.
A kind of fill method in gas pumping hole disclosed by the invention, sealing baffle plate be placed in gas pumping hole position in rock stratum and
The boundary in coal seam.
A kind of fill method in gas pumping hole disclosed by the invention, suction inner tube is placed in coal seam section, takes out with being placed in gas
The external gas pumping seal of tube being placed in rock stratum section adopted in sleeve pipe connects.
A kind of fill method in gas pumping hole disclosed by the invention, gas pumping hole plugging material is polyurethane or viscosity
Rapid expanding colloid, this plugging material is placed in gas pumping sleeve pipe and is located at rock stratum section.
A kind of fill method in gas pumping hole disclosed by the invention, the gas pressure in underground pressure air pipeline be 0.3～
0.5mpa.
A kind of fill method in gas pumping hole disclosed by the invention, gas pumping in the hole place have suction inner tube watt
This extraction sleeve pipe, arranges packing material between this gas pumping sleeve pipe and suction inner tube, described packing material is with underground pressure air
The gases at high pressure of pipeline are that power is taken out by being placed in the material feeding jet pipe injection be arranged in parallel in gas pumping sleeve pipe with suction inner tube
Adopt in sleeve pipe, one end of material feeding jet pipe is tightly connected with external gas material blender, the other end and gas pumping sleeve pipe backgauge part
Connect, gas pumping collar aperture oral area is also filled with plugging material, using technical scheme, gas pumping in the hole is placed
Gas pumping sleeve pipe, for the gas pumping hole of weak seam, can strengthen the intensity in gas pumping hole, gas pumping sleeve pipe with
Between suction inner tube, packing material is set, increases the support in gas pumping hole, it is to avoid gas extraction hole from collapsing is it is ensured that produce coal seam
The extraction of gas, packing material with the gases at high pressure of underground pressure air pipeline for power by be placed in gas pumping sleeve pipe with suction
It is ensured that the conveying of up gas pumping in the hole packing material puts in place in the material feeding jet pipe injection extraction sleeve pipe that inner tube be arranged in parallel, gram
Take that the hand-stuff packing material of the prior art efficiency that wastes time and energy is low, the not enough defect of compactedness is it is ensured that extracting result simultaneously,
Gas pumping hole is under the common support of gas pumping sleeve pipe and packing material, it is to avoid gas pumping hole collapse hole；The setting of backgauge part
Put, it is to avoid gas pumping sleeve pipe packing material leaks.
Backgauge part is that the end of the nozzle sealing baffle plate and material feeding jet pipe that are placed in material feeding jet pipe is detachably connected with it
Striker plate, the end of striker plate is additionally provided with clamp button of the spring valve, and striker plate is to threaded with material feeding jet pipe, and packing material fills
After gas pumping sleeve pipe, to sealing at baffle plate, rotation material feeding jet pipe draws it out packing material extruding striker plate, clamp button of the spring valve
Door termination, the setting of sealing baffle plate, the oral area of closure gas pumping sleeve pipe, it is to avoid packing material leak it is ensured that packing material
Compactedness in gas pumping sleeve pipe；Striker plate is to threaded with material feeding jet pipe, during conveying packing material, adopts
Be the gases at high pressure of underground pressure air pipeline be power, pressure is big, and threaded degree of being connected firmly is high, it is to avoid conveying filling material
During material, striker plate comes off, and facilitates the extraction of material feeding jet pipe；Clamp button of the spring valve closes under the elastic acting force of spring, can in case
Only packing material leakage.
Packing material is the porous ceramic particles of 10～15mm, the uniform mesh of side wall of gas pumping sleeve pipe, mesh diameter
For 8mm, porous ceramic particles intensity high it is ensured that certain hole, facilitate the flowing of gas it is ensured that the suction of gas；Gas is taken out
Adopt the uniform mesh of side wall of sleeve pipe it is ensured that the suction of gas, reduce bottom gas suction load, improve overall extraction efficiency；With
When gas pumping sleeve surface be covered with mesh, and inside has packing material to fill up, inside and outside stress balance, and ickings is not easily accessible gas
Extraction cannula occlusion mesh, uniformly suction is derived from different depth, the gas of different directions to facilitate gas suction inner tube, overcomes existing
There is the gas pumping pipe suction load inequality of technology, end aspiration load is big, easily the defect such as blocking.
Gas pressure in underground pressure air pipeline is to be gas and solid mixture in 0.3～0.5mpa, material feeding jet pipe, pressure
Power is low to put in place it is difficult to convey the packing material of solid, and pressure is excessive, leads to gas pumping sleeve pipe to produce deformation, suitable pressure
Power is it is ensured that the conveying of gas pumping sleeve pipe packing material puts in place.
Sealing baffle plate is placed in gas pumping hole position in the boundary of rock stratum and coal seam, aspirates inner tube and is placed in coal seam section, and puts
The external gas pumping seal of tube being placed in rock stratum section in gas pumping sleeve pipe connects, gas pumping hole plugging material for
Polyurethane or viscosity rapid expanding colloid, this plugging material is placed in gas pumping sleeve pipe and is located at rock stratum section, this structure setting,
Ensure the reasonable utilization of material, ensure gas pumping efficiency simultaneously.
Below with reference to drawings and Examples, the present invention is described in detail.
Brief description
Below the labelling of the content expressed by this specification each width accompanying drawing and in figure is briefly described:
Fig. 1 is a kind of schematic diagram of the fill method in gas pumping of present invention hole；
Fig. 2 is the schematic diagram in gas pumping hole in the fill method in a kind of gas pumping of present invention hole shown in Fig. 1；
Fig. 3 is the broken section of the gas pumping hole filling pipe of the fill method in gas pumping hole of the present invention shown in Fig. 1
Figure.
In figure is labeled as: 1, rock stratum；2nd, coal seam；3rd, gas pumping sleeve pipe；4th, packing material；5th, gas pumping hole；6th, note
Material jet pipe；7th, gas pumping pipe；8th, seal baffle plate；9th, striker plate；10th, clamp button of the spring valve；11st, mesh；12nd, aspirate inner tube；
13rd, gas material blender；14th, pressure air pipe；15th, plugging material.
Specific embodiment
Below against accompanying drawing, by the description to embodiment, each structure for example involved to the specific embodiment of the present invention
Mutual alignment between the shape of part, construction, each several part and annexation, the effect of each several part and operation principle, manufacturing process
And operate with method etc., be described in further detail, with help those skilled in the art to the inventive concept of the present invention,
Technical scheme has more complete, accurate and deep understanding.
Fig. 1 is a kind of schematic diagram of the fill method in gas pumping of present invention hole；Fig. 2 is that the present invention shown in Fig. 1 is a kind of
The schematic diagram in gas pumping hole in the fill method in gas pumping hole；Fig. 3 is the filling in the gas pumping hole of the present invention shown in Fig. 1
The partial sectional view of pipe is filled in the gas pumping hole of method；A kind of fill method in gas pumping of present invention hole as depicted,
Place the gas pumping sleeve pipe 3 with suction inner tube 12 in gas pumping hole 5, this gas pumping sleeve pipe 3 and suction inner tube 12 it
Between arrange packing material 4, packing material 4 is with the gases at high pressure of underground pressure air pipeline 14 for power by being placed in gas pumping sleeve pipe
In the material feeding jet pipes 6 injection gas pumping sleeve pipes 3 be arrangeding in parallel with suction inner tube 12 in 3, one end of material feeding jet pipe 6 and external
Gas material blender 13 is tightly connected, and gas material blender 13 is connected with pressure air pipe 14, and the other end is arranged with gas pumping sleeve pipe 3
Backgauge part connect, gas pumping sleeve pipe 3 orifice part is also filled with plugging material 15, during filling gas pumping hole 5, packing material
4 are placed in gas material blender 13；Using technical scheme, in gas pumping hole 5, place gas pumping sleeve pipe 3, for
The gas pumping hole 5 of weak seam, can strengthen the intensity in gas pumping hole 5, between gas pumping sleeve pipe 3 and suction inner tube 12
Setting packing material 4, increases the support in gas pumping hole 5, it is to avoid collapse it is ensured that producing taking out of coal-bed gas in gas pumping hole 5
Adopt, packing material 4 is with the gases at high pressure of underground pressure air pipeline 14 for power by being placed in gas pumping sleeve pipe 3 and aspirating inner tube
In material feeding jet pipe 6 that 12 be arranged in parallel injection gas pumping sleeve pipe 3 it is ensured that in up gas pumping hole 5 packing material 4 be transported to
Position, overcomes that the hand-stuff packing material of prior art 4 efficiency that wastes time and energy is low, and the not enough defect of compactedness is it is ensured that take out simultaneously
Adopt effect, gas pumping hole 5 is under the common support of gas pumping sleeve pipe 3 and packing material 4, it is to avoid gas pumping hole 5 collapse hole；
The setting of backgauge part, it is to avoid the packing material 4 in gas pumping sleeve pipe 3 leaks.
Backgauge part is the sealing baffle plate 8 of the nozzle being placed in material feeding jet pipe 6 and the end of material feeding jet pipe 6 is detachably connected with it
The striker plate 9 connecing, the end of striker plate 9 is additionally provided with clamp button of the spring valve 10, and striker plate 9 is to threaded with material feeding jet pipe 6, fills out
Fill after material 4 fills gas pumping sleeve pipe 3, at packing material 4 extruding striker plate 9 to sealing baffle plate 8, rotation material feeding jet pipe 6 will
It is extracted out, and clamp button of the spring valve 10 is closed, the setting of sealing baffle plate 8, the oral area of closure gas pumping sleeve pipe 3, it is to avoid filling material
Material 4 leak it is ensured that compactedness in gas pumping sleeve pipe 3 for the packing material 4；Striker plate 9 is with material feeding jet pipe 6 for screw thread even
Connect, during conveying packing material 4, the gases at high pressure using underground pressure air pipeline 14 are power, and pressure is big, and screw thread is even
The degree of being connected firmly connecing is high, it is to avoid during conveying packing material 4, striker plate 9 comes off, and facilitates the extraction of material feeding jet pipe 6；Clamp button of the spring
Valve 10 closes under the elastic acting force of spring, can prevent packing material 4 from leaking.
Packing material 4 is the porous ceramic particles of 10～15mm, the uniform mesh of side wall 11 of gas pumping sleeve pipe 3, mesh
11 a diameter of 8mm, porous ceramic particles intensity high it is ensured that certain hole, facilitate the flowing of gas it is ensured that the suction of gas；
The uniform mesh of side wall 11 of gas pumping sleeve pipe 3, it is ensured that the suction of gas, reduces bottom gas suction load, improves overall taking out
Adopt efficiency；Gas pumping sleeve pipe 3 surface is covered with mesh 11 simultaneously, and inside has packing material to fill up, inside and outside stress balance, ickings
It is not easily accessible gas pumping sleeve pipe 3 blocking mesh 11, facilitate gas suction inner tube 12 uniformly to aspirate and be derived from different depth, not Tongfang
To gas, gas pumping pipe 3 suction load overcoming prior art is uneven, and end aspiration load is big, and easily blocking etc. lacks
Fall into.
Gas pressure in underground pressure air pipeline 14 is 0.3～0.5mpa, for gas and solid mixing in material feeding jet pipe 6
Thing, pressure is low to put in place it is difficult to convey the packing material 4 of solid, and pressure is excessive, leads to gas pumping sleeve pipe 3 to produce deformation, closes
Suitable pressure is it is ensured that gas pumping sleeve pipe 3 packing material 4 conveying puts in place.
Sealing baffle plate 8 is placed in gas pumping hole position in the boundary of rock stratum 1 and coal seam 2, aspirates inner tube 12 and is placed in coal seam 2
Section, is tightly connected with the external gas pumping pipe 7 being placed in 1 section of rock stratum being placed in gas pumping sleeve pipe 3, and gas pumping hole is sealed
Stifled material is polyurethane or viscosity rapid expanding colloid, and this plugging material is placed in gas pumping sleeve pipe and is located at rock stratum section, this
Structure setting, it is ensured that the reasonable utilization of material, ensures gas pumping efficiency simultaneously.
During use, gas pumping sleeve pipe 3 is inserted in gas pumping hole 5, then material feeding jet pipe 6 is stretched into gas pumping sleeve pipe
3 top, gas material blender 13 is connected with pressure air pipe 14, and during filling gas pumping hole 5, packing material 4 is placed on
In gas material blender 13, open the valve of the gentle material blender 13 of underground pressure air pipeline 14 valve, packing material 4 is in gases at high pressure
Conveying under injection gas pumping sleeve pipe 3 in, the striker plate 9 that material feeding jet pipe 6 end is detachably connected with it is in packing material 4
At the uniform velocity retreat under extruding, packing material 4 can close pressure air pipe 14 valve after filling gas pumping sleeve pipe 3, rotate and extract
Material feeding jet pipe 6, clamp button of the spring valve 10 closes automatically in the elastic acting force of spring, can be effectively prevented packing material 4 and let out
Leakage, finally blocks gas pumping aperture using gas pumping hole plugging material 15.
In mining production process, methane gas flow to the big gas pumping hole 5 in space, the side wall of gas pumping sleeve pipe 3
Uniform mesh 11, methane gas enter from different directions, and gas pumping hole is total to gas pumping sleeve pipe 3 and packing material 4
Under supporting, it is not susceptible to collapse hole；Gas pumping sleeve pipe 3 surface is covered with mesh 11 simultaneously, and gas pumping sleeve pipe 3 is solid
Packing material 4, inside and outside stress balance, ickings is not easily accessible gas pumping sleeve pipe 3 blocking mesh 11；Gas suction inner tube 12 is covered
Capping amasss greatly, can uniformly aspirate from different depth, the gas of different directions, the gas pumping pipe overcoming prior art is taken out
Inhale load uneven, end aspiration load is big, easily the defect such as blocking.
Above in conjunction with accompanying drawing, the present invention is exemplarily described it is clear that the present invention implements is not subject to aforesaid way
Restriction, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and the design of the present invention and technical scheme are directly applied to other occasions, all within protection scope of the present invention.
Claims (6)
1. a kind of fill method in gas pumping hole it is characterised in that: gas pumping in the hole place has suction inner tube gas
Extraction sleeve pipe, arranges packing material between this gas pumping sleeve pipe and suction inner tube, described packing material is with underground pressure airduct
The gases at high pressure in road are that power injects extraction by being placed in the material feeding jet pipe be arranged in parallel in gas pumping sleeve pipe with suction inner tube
In sleeve pipe, one end of material feeding jet pipe is tightly connected with external gas material blender, the gear that the other end is arranged with gas pumping sleeve pipe
Materials and parts connect, and gas pumping collar aperture oral area is also filled with plugging material, and described backgauge part is to be placed in gas pumping sleeve pipe
The sealing baffle plate positioned at coal seam and rock stratum boundary, and be placed in the backgauge that the end of material feeding jet pipe is detachably connected with it
Plate, the end of striker plate is additionally provided with clamp button of the spring valve, and described striker plate is to threaded with material feeding jet pipe, and packing material is noted
After full gas pumping sleeve pipe, to sealing at baffle plate, rotation material feeding jet pipe draws it out packing material extruding striker plate, clamp button of the spring
Valve is closed.
2. according to a kind of gas pumping hole described in claim 1 fill method it is characterised in that: described packing material is
The porous ceramic particles of 10 ~ 15mm.
3. according to a kind of gas pumping hole described in claim 1 fill method it is characterised in that: described gas pumping set
The uniform mesh of side wall of pipe, mesh diameter is 8mm.
4. according to a kind of gas pumping hole described in claim 3 fill method it is characterised in that: described suction inner tube is put
In coal seam section, it is connected with the external gas pumping seal of tube being placed in rock stratum section being placed in gas pumping sleeve pipe.
5. according to a kind of gas pumping hole described in claim 3 fill method it is characterised in that: described gas pumping hole
Plugging material is viscosity rapid expanding colloid, and this plugging material is placed in gas pumping sleeve pipe and is located at rock stratum section.
6. according to a kind of gas pumping hole described in claim 1 fill method it is characterised in that: described underground pressure airduct
Gas pressure in road is 0.3 ~ 0.5mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445499.7A CN104234660B (en) | 2014-09-03 | 2014-09-03 | Filling method for gas extraction hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445499.7A CN104234660B (en) | 2014-09-03 | 2014-09-03 | Filling method for gas extraction hole |
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| Publication Number | Publication Date |
|---|---|
| CN104234660A CN104234660A (en) | 2014-12-24 |
| CN104234660B true CN104234660B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410445499.7A Expired - Fee Related CN104234660B (en) | 2014-09-03 | 2014-09-03 | Filling method for gas extraction hole |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279729B (en) * | 2021-06-10 | 2022-03-22 | 中国矿业大学(北京) | Gas extraction method for leaking stoppage and concentration |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474409A (en) * | 1982-09-09 | 1984-10-02 | The United States Of America As Represented By The Secretary Of The Interior | Method of enhancing the removal of methane gas and associated fluids from mine boreholes |
| CN2213233Y (en) * | 1994-10-18 | 1995-11-22 | 肥城矿务局 | Expansion plug hole sealing device |
| EP0686069A1 (en) * | 1993-02-25 | 1995-12-13 | Hedeselskabet | A method and a system for exploitation of gas from waste disposal sites |
| CN201177137Y (en) * | 2008-01-21 | 2009-01-07 | 张振龙 | Ventilating casing tube for extracting and discharging gas |
| CN201650344U (en) * | 2010-03-05 | 2010-11-24 | 中煤国际工程集团武汉设计研究院 | Plastic expanding shell anchor bar for gas drainage |
| CN102465713A (en) * | 2010-11-11 | 2012-05-23 | 淮南矿业(集团)有限责任公司 | Flow guide pipe for gas drainage and gas acquisition device |
| CN102587961A (en) * | 2012-04-10 | 2012-07-18 | 中国矿业大学 | Feeding method and device for hole protecting pipe for soft coal seam gas extraction hole |
| CN103195471A (en) * | 2013-04-22 | 2013-07-10 | 中国矿业大学 | Method for preventing drilling collapse of downhole coal bed |
| CN103216259A (en) * | 2013-04-22 | 2013-07-24 | 中国矿业大学 | System protecting underground coal bed hole drilling from collapse |
| CN203223245U (en) * | 2013-01-14 | 2013-10-02 | 贵州盘江精煤股份有限公司 | Anti-collapsing apparatus for drainage drill hole with large aperture and long distance |
| CN103850699A (en) * | 2014-04-02 | 2014-06-11 | 中国矿业大学 | Inner support hole protection pipe for pumping gas from soft coal seam and manufacturing method |
-
2014
- 2014-09-03 CN CN201410445499.7A patent/CN104234660B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474409A (en) * | 1982-09-09 | 1984-10-02 | The United States Of America As Represented By The Secretary Of The Interior | Method of enhancing the removal of methane gas and associated fluids from mine boreholes |
| EP0686069A1 (en) * | 1993-02-25 | 1995-12-13 | Hedeselskabet | A method and a system for exploitation of gas from waste disposal sites |
| CN2213233Y (en) * | 1994-10-18 | 1995-11-22 | 肥城矿务局 | Expansion plug hole sealing device |
| CN201177137Y (en) * | 2008-01-21 | 2009-01-07 | 张振龙 | Ventilating casing tube for extracting and discharging gas |
| CN201650344U (en) * | 2010-03-05 | 2010-11-24 | 中煤国际工程集团武汉设计研究院 | Plastic expanding shell anchor bar for gas drainage |
| CN102465713A (en) * | 2010-11-11 | 2012-05-23 | 淮南矿业(集团)有限责任公司 | Flow guide pipe for gas drainage and gas acquisition device |
| CN102587961A (en) * | 2012-04-10 | 2012-07-18 | 中国矿业大学 | Feeding method and device for hole protecting pipe for soft coal seam gas extraction hole |
| CN203223245U (en) * | 2013-01-14 | 2013-10-02 | 贵州盘江精煤股份有限公司 | Anti-collapsing apparatus for drainage drill hole with large aperture and long distance |
| CN103195471A (en) * | 2013-04-22 | 2013-07-10 | 中国矿业大学 | Method for preventing drilling collapse of downhole coal bed |
| CN103216259A (en) * | 2013-04-22 | 2013-07-24 | 中国矿业大学 | System protecting underground coal bed hole drilling from collapse |
| CN103850699A (en) * | 2014-04-02 | 2014-06-11 | 中国矿业大学 | Inner support hole protection pipe for pumping gas from soft coal seam and manufacturing method |
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| CN104234660A (en) | 2014-12-24 |
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