CN104329113B - A kind of method of surface drilling standing seat earth release mash gas extraction - Google Patents
A kind of method of surface drilling standing seat earth release mash gas extraction Download PDFInfo
- Publication number
- CN104329113B CN104329113B CN201410446247.6A CN201410446247A CN104329113B CN 104329113 B CN104329113 B CN 104329113B CN 201410446247 A CN201410446247 A CN 201410446247A CN 104329113 B CN104329113 B CN 104329113B
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- Prior art keywords
- drilling
- ground
- explosive
- coal seam
- gas extraction
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- 238000005553 drilling Methods 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000000605 extraction Methods 0.000 title claims abstract description 28
- 239000002360 explosive Substances 0.000 claims abstract description 23
- 239000003245 coal Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000005086 pumping Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000005422 blasting Methods 0.000 claims abstract description 7
- 238000005474 detonation Methods 0.000 claims description 4
- 239000000499 gel Substances 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/263—Methods for stimulating production by forming crevices or fractures using explosives
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
A kind of method that the invention provides surface drilling standing seat earth release mash gas extraction, comprise the steps: work surface overlying earth's surface along the advance of the face direction multiple ground drilling of drilling to working face of coal seam base plate below at 2～3m；Use " L-shaped " drilling technique, connect two ground drillings in the bottom of ground drilling along advance of the face direction Drilling horizontal drilling；Explosive is filled in horizontal drilling, and runs through adjacent explosive, earthward water filling sealing of hole in drilling well with primacord；Ignition charge, explosive blasting loosens coal seam, produces a large amount of crack, and then reaches the purpose that release is anti-reflection；Being extracted out by water in ground drilling and horizontal drilling, gas pumping pipe accesses ground drilling, the gas in coal seam described in extraction.The present invention utilizes ground drilling, blasting face floor strata, draining coal seam gas, has low cost, and safety is high, simplifies the advantages such as mash gas extraction operation.
Description
Technical field
The present invention relates to colliery blasting technical field, be specifically related to a kind of surface drilling standing seat earth and unload
The method of pressure mash gas extraction.
Background technology
The exploitation of high gassy and low permeability coal seam is frequently accompanied by a difficult problem for a large amount of Gas, has a strong impact on and restricts
The safe working in colliery.Solve this difficult problem is pre-coal-bed gas of taking out at all, and the method for Gas pre-drainage is main
Carry out, to work surface coal seam, Gas pre-drainage of holing by the gas pumping lane of down-hole, adopt this method needs in work
Make seat earth rock stratum, face is arranged two gas pumping tunnels, also need to if desired at work surface roof rock
Arranging a gas pumping lane in Ceng again, the method not only roadway layout is costly, expends the time long, work
Intensity is big, and is prone to accidents.
Summary of the invention
For solving above-mentioned technical problem, the invention provides a kind of surface drilling standing seat earth release and take out
The method of mash gas, can carry out standing to work surface coal seam by the way of ground drilling, to low ventilative
Property coal seam carries out that release is anti-reflection and then draining coal seam gas.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
A kind of method of surface drilling standing seat earth release mash gas extraction, comprises the steps:
A () works to coal seam along the advance of the face direction multiple ground drilling of drilling on work surface overlying earth's surface
Below the base plate of face at 2～3m；
B () utilizes " L-shaped " drilling technique, in the bottom of ground drilling described in step (a) along work
Face direction of propulsion drilling horizontal drilling, described horizontal drilling connects adjacent described ground drilling；
C explosive is filled in described in step (b) in horizontal drilling by (), and run through adjacent described with primacord
Explosive；
D () water filling in ground drilling described in step (a) carries out sealing of hole；
E explosive described in () detonation step (c), described explosive blasting loosens described coal seam, produces and splits in a large number
Gap；
F water in described ground drilling and described horizontal drilling is extracted out by (), gas pumping pipe accesses describedly
Face drilling well, the gas in coal seam described in extraction.
The method of surface drilling standing seat earth release mash gas extraction of the present invention, wherein, step
A the surface drilling spacing described in () is 200～300m.
The method of surface drilling standing seat earth release mash gas extraction of the present invention, wherein, step
Ground drilling described in (a) a diameter of 75～145mm.
The method of surface drilling standing seat earth release mash gas extraction of the present invention, wherein, step
B the horizontal drilling diameter described in () is identical with ground drilling diameter.
The method of surface drilling standing seat earth release mash gas extraction of the present invention, wherein, step
C explosive described in () is aqueous gels or emulsion.
The method of surface drilling standing seat earth release mash gas extraction of the present invention, wherein, step
D the ground drilling water filling sealing of hole described in () hangs down height more than 300m to or water column concordant with ground.
The method contrast of the present invention and existing Gas pre-drainage, it is not necessary to tunneling gas extraction lane and decrease extraction and bore
The advantages, the most significantly letter such as the layout in hole, has low cost, and the duration is short, and the amount of labour is light, efficient, safety
Change gas pumping process；Surface drilling spacing described in step (a) is 200～300m, is conducive to taking into account
The grazing of lateral aperture and the quantity of ground drilling；Ground drilling water filling sealing of hole described in step (d) to
Ground is concordant or water column hangs down height more than 300m, explodes sealing of hole pressure with this and gas is unlikely to leak.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the method for surface drilling standing seat earth release mash gas extraction of the present invention；
Fig. 2 is the effect signal of the method for surface drilling standing seat earth release mash gas extraction of the present invention
Figure.
1 ground drilling；2 water columns；3 rock stratum；4 coal seams；5 horizontal drillings；6 detonators；7—
Primacord；8 aqueous gels；9 rubbles；10 cracks；11 ground.
Below in conjunction with specific embodiments and the drawings to surface drilling standing seat earth release extraction of the present invention
The method of gas is described further.
Detailed description of the invention
Embodiment 1
The method of the present embodiment a kind of surface drilling standing seat earth release mash gas extraction, including following step
Rapid:
(a) on work surface overlying earth's surface along advance of the face direction every a diameter of 75mm of 200m drilling
Ground drilling 1 to coal seam 4 floor undulation below at 2m；
B () utilizes " L-shaped " drilling technique, dig along advance of the face direction in the bottom of ground drilling 1
Drill diameter is 75mm horizontal drilling 5, and horizontal drilling 5 connects adjacent ground drilling 1；
C explosive 8 is filled in horizontal drilling 5 described in step (b) by (), and run through phase with primacord 7
Adjacent explosive 8, explosive 8 is aqueous gels；
(d) in step (b) in ground drilling 1 water filling sealing of hole to the most concordant with ground 11；
E () uses explosive 8 in detonator 6 detonation step (c), explosive 8 blast to loosen coal seam 4, produce big
Amount crack 10；
F water in ground drilling 1 and horizontal drilling 5 is extracted out by (), gas pumping pipe accesses ground drilling 1,
Gas in extraction coal seam 4.
Embodiment 2
The method of the present embodiment a kind of surface drilling standing seat earth release mash gas extraction, including following step
Rapid:
(a) on work surface overlying earth's surface along advance of the face direction every a diameter of 145mm of 300m drilling
Ground drilling 1 to coal seam 4 floor undulation below at 3m；
B () utilizes " L-shaped " drilling technique, dig along advance of the face direction in the bottom of ground drilling 1
Drill diameter is 145mm horizontal drilling 5, and horizontal drilling 5 connects adjacent ground drilling 1；
C explosive 8 is filled in horizontal drilling 5 described in step (b) by (), and run through phase with primacord 7
Adjacent explosive 8, explosive 8 is emulsion；
(d) in step (b) in ground drilling 1 water filling sealing of hole hang down height more than 300m to water column 2；
E () uses explosive 8 in detonator 6 detonation step (c), explosive 8 blast to loosen coal seam 4, produce big
Amount crack 10；
F water in ground drilling 1 and horizontal drilling 5 is extracted out by (), gas pumping pipe accesses ground drilling 1,
Gas in extraction coal seam 4.
In blasting process, want retained personnel and the safe distance of plant equipment distance ground drilling 30m, prevent
Water, slag particle in blasting process destroy equipment or hurt personnel.
Embodiment described above is only to be described the preferred embodiment of the present invention, not to the present invention
Scope be defined, on the premise of designing spirit without departing from the present invention, those of ordinary skill in the art to this
The various deformation made of technical scheme of invention and improvement, all should fall into the protection that claims of the present invention determines
In the range of.
Claims (5)
1. the method for a surface drilling standing seat earth release mash gas extraction, it is characterised in that include as
Lower step:
(a) on work surface overlying earth's surface along the multiple ground drilling of advance of the face direction drilling (1) to coal seam (4)
Below floor undulation at 2～3m；
B () utilizes " L-shaped " drilling technique, in the bottom of ground drilling described in step (a) (1) along work
Making face direction of propulsion drilling horizontal drilling (5), described horizontal drilling (5) connects adjacent described ground drilling (1)；
C explosive (8) is filled in horizontal drilling described in step (b) (5) by (), and with primacord (7)
Run through adjacent described explosive (8)；
D () water filling in ground drilling described in step (a) (1) carries out sealing of hole；
Explosive described in (e) detonation step (c) (8), coal seam (4) described in described explosive (8) in-place blasting out,
Produce a large amount of crack (10)；
F water in described ground drilling (1) and described horizontal drilling (5) is extracted out by (), gas pumping pipe accesses
Described ground drilling (1), the gas in coal seam (4) described in extraction；
Ground drilling (1) spacing described in step (a) is 200～300m.
The most according to claim 1, the method for surface drilling standing seat earth release mash gas extraction, it is special
Levy and be: ground drilling described in step (a) (1) a diameter of 75～145mm.
The most according to claim 2, the method for surface drilling standing seat earth release mash gas extraction, it is special
Levy and be: horizontal drilling described in step (b) (5) diameter is identical with described ground drilling (1) diameter.
The most according to claim 3, the method for surface drilling standing seat earth release mash gas extraction, it is special
Levy and be: explosive described in step (c) (8) is aqueous gels or emulsion.
5. according to the side of surface drilling standing seat earth release mash gas extraction described in claim 1-4 any one
Method, it is characterised in that: ground drilling (1) the water filling sealing of hole described in step (d) is put down to ground (11)
Neat or water column (2) hangs down height more than 300m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410446247.6A CN104329113B (en) | 2014-09-03 | 2014-09-03 | A kind of method of surface drilling standing seat earth release mash gas extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410446247.6A CN104329113B (en) | 2014-09-03 | 2014-09-03 | A kind of method of surface drilling standing seat earth release mash gas extraction |
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| Publication Number | Publication Date |
|---|---|
| CN104329113A CN104329113A (en) | 2015-02-04 |
| CN104329113B true CN104329113B (en) | 2016-10-05 |
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| CN201410446247.6A Expired - Fee Related CN104329113B (en) | 2014-09-03 | 2014-09-03 | A kind of method of surface drilling standing seat earth release mash gas extraction |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121644B (en) * | 2016-06-17 | 2018-05-29 | 中国矿业大学 | The water-filling pressure-bearing unloading pressure by blasting of cellular structure and supporting reinforcement are crosslinked based on drilling in coal and rock plane |
| CN106894816A (en) * | 2017-02-23 | 2017-06-27 | 中国矿业大学 | Far field key stratum based on set square structural model cuts top release shield lane method |
| CN106948860B (en) * | 2017-05-27 | 2018-09-18 | 中煤科工集团重庆研究院有限公司 | Method for extracting coal seam gas based on cooperation of U-shaped well and directional drilling |
| CN107120137B (en) * | 2017-07-12 | 2019-03-15 | 安徽理工大学 | A kind of coal roadway tunneling is along seat earth Deephole pre-splitting blasting pumping method |
| CN108708722B (en) * | 2018-03-27 | 2020-01-14 | 山东科技大学 | Method for efficiently preventing rock burst of low-permeability coal seam |
| CN111810225A (en) * | 2020-08-28 | 2020-10-23 | 中煤科工集团重庆研究院有限公司 | Ground L-shaped well under-pressure blasting crack-making and gas drainage and mining method |
| CN113217081B (en) * | 2021-05-18 | 2023-10-03 | 重庆大学 | Method for eliminating gas by controllable combustion of high-gas low-permeability coal seam |
| CN113669062B (en) * | 2021-09-27 | 2023-11-03 | 重庆大学 | Fault activated rock burst control method based on ground pressure blasting |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6280000B1 (en) * | 1998-11-20 | 2001-08-28 | Joseph A. Zupanick | Method for production of gas from a coal seam using intersecting well bores |
| CN101979835B (en) * | 2010-09-21 | 2012-06-20 | 安徽省煤田地质局第一勘探队 | Method for preventing coal and gas burst by drill communicated coal mining exhaust |
| RU2453705C1 (en) * | 2011-01-13 | 2012-06-20 | Учреждение Российской академии наук Институт проблем комплексного освоения недр Российской академии наук (УРАН ИПКОН РАН) | Method for degassing of coal beds |
| CN102418549B (en) * | 2011-08-15 | 2013-09-25 | 河南理工大学 | Technical method for extracting coal bed methane from constructed coal development area |
| CN103195466B (en) * | 2013-03-30 | 2015-08-19 | 重庆大学 | A kind of directed hydraulic pressure demolition improves the method for gas permeability of coal seam |
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Granted publication date: 20161005 Termination date: 20190903 |
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