CN104329113A - Gas drainage method by pressure relief of coal bed bottom plate through ground drilling and loosening blasting - Google Patents
Gas drainage method by pressure relief of coal bed bottom plate through ground drilling and loosening blasting Download PDFInfo
- Publication number
- CN104329113A CN104329113A CN201410446247.6A CN201410446247A CN104329113A CN 104329113 A CN104329113 A CN 104329113A CN 201410446247 A CN201410446247 A CN 201410446247A CN 104329113 A CN104329113 A CN 104329113A
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- drilling
- ground
- ground drilling
- coal bed
- explosive
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- 238000005553 drilling Methods 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000005422 blasting Methods 0.000 title claims abstract description 28
- 239000003245 coal Substances 0.000 title claims abstract description 25
- 239000002360 explosive Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims description 26
- 238000005086 pumping Methods 0.000 claims description 8
- 238000005474 detonation Methods 0.000 claims description 4
- 239000000499 gel Substances 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 3
- 238000012279 drainage procedure Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009304 pastoral farming Methods 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
The invention provides a gas drainage method by pressure relief of a coal bed bottom plate through ground drilling and loosening blasting. The method comprises the following steps of drilling a plurality of ground drilling wells to the part 2-3cm below a bottom plate of a coal bed working surface on the covering ground of the working surface along the advancing direction of the working surface; adopting an L-shaped drilling technology, and drilling horizontal drilling holes in the bottom part of the ground drilling wells along the driving direction of the working surface, so as to communicate every two ground drilling wells; filling explosives into the horizontal drilling holes, enabling a detonating fuse to penetrate through the adjacent explosives, filling water into the ground drilling wells, and sealing the holes; detonating the explosives, enabling the explosives to blast and loosen the coal bed, and generating a large amount of cracks, so as to reach the purposes of relieving pressure and increasing permeability; sucking the water out of the ground drilling wells and the horizontal drilling holes, connecting a gas drainage pipe into the corresponding ground drilling well, and draining the gas out of the coal bed. The method has the advantages that the ground drilling wells are utilized, a rock layer at the bottom plate of the working surface is blasted, and the gas in the coal bed is drained; the method has the advantages that the cost is low, the safety is high, the gas drainage procedure is simplified, and the like.
Description
Technical field
The present invention relates to colliery blasting technical field, be specifically related to a kind of method of surface drilling loosening blasting seat earth release mash gas extraction.
Background technology
The exploitation of high gassy and low permeability coal seam, usually with a difficult problem for a large amount of Gas, has a strong impact on and governs the safe working in colliery.Solve this difficult problem be at all take out coal-bed gas in advance, the method of Gas pre-drainage carries out boring Gas pre-drainage mainly through the gas pumping lane of down-hole to work plane coal seam, this kind of method is adopted to need to arrange two gas pumping tunnels in work plane seat earth rock stratum, also need if desired to arrange a gas pumping lane again in work plane Roof Rock Strata of Coal Seam, the method not only roadway layout is costly, expend time in length, and labour intensity is large, and is prone to accidents.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of method of surface drilling loosening blasting seat earth release mash gas extraction, loosening blasting can be carried out by the mode of ground drilling to work plane coal seam, the anti-reflection and then draining coal seam gas of release is carried out to low air permeability coal seam.
For achieving the above object, the present invention adopts following technical scheme:
A method for surface drilling loosening blasting seat earth release mash gas extraction, comprises the steps:
A () is covered earth's surface and is bored below multiple ground drilling to working face of coal seam base plate 2 ~ 3m place along advance of the face direction cutter on work plane;
B () utilizes " L shape " drilling technique, described in step (a), horizontal drilling is bored along advance of the face direction cutter in the bottom of ground drilling, and described horizontal drilling is communicated with adjacent described ground drilling;
C explosive is filled in horizontal drilling described in step (b) by (), and run through adjacent described explosive with detonating fuse;
D () carries out sealing of hole to water filling in ground drilling described in step (a);
Explosive described in (e) detonation step (c), described explosive blasting loosens described coal seam, produces a large amount of crack;
F water in described ground drilling and described horizontal drilling is extracted out by (), gas pumping pipe accesses described ground drilling, the gas in coal seam described in extraction.
The method of surface drilling loosening blasting seat earth release mash gas extraction of the present invention, wherein, the surface drilling spacing described in step (a) is 200 ~ 300m.
The method of surface drilling loosening blasting seat earth release mash gas extraction of the present invention, wherein, the diameter of ground drilling described in step (a) is 75 ~ 145mm.
The method of surface drilling loosening blasting seat earth release mash gas extraction of the present invention, wherein, the horizontal drilling diameter described in step (b) is identical with ground drilling diameter.
The method of surface drilling loosening blasting seat earth release mash gas extraction of the present invention, wherein, explosive described in step (c) is aqueous gels or emulsion.
The method of surface drilling loosening blasting seat earth release mash gas extraction of the present invention, wherein, the ground drilling water filling sealing of hole described in step (d) hangs down height more than 300m to or water column concordant with ground.
The advantages such as the method for the present invention and existing Gas pre-drainage contrasts, and decrease the layout of extraction borehole without the need to tunneling gas extraction lane, have cost low, the duration is short, the amount of labour is light, efficient, safety, also simplifies gas pumping process simultaneously; 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 or water column concordant with ground hangs down height more than 300m, is unlikely to leak with this explode sealing of hole pressure and gas.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the method for surface drilling loosening blasting seat earth release mash gas extraction of the present invention;
Fig. 2 is the effect schematic diagram of the method for surface drilling loosening blasting seat earth release mash gas extraction of the present invention.
1-ground drilling; 2-water column; 3-rock stratum; 4-coal seam; 5-horizontal drilling; 6-detonator; 7-detonating fuse; 8-aqueous gels; 9-rubble; 10-crack; 11-ground.
Be described further below in conjunction with the method for specific embodiments and the drawings to surface drilling loosening blasting seat earth release mash gas extraction of the present invention.
Detailed description of the invention
Embodiment 1
The method of a kind of surface drilling loosening blasting of the present embodiment seat earth release mash gas extraction, comprises the following steps:
(a) cover on work plane earth's surface along advance of the face direction every 200m cut a hole drill diameter be 75mm ground drilling 1 to coal seam 4 floor undulation below 2m place;
B () utilizes " L shape " drilling technique, cutting a hole drill diameter in the bottom of ground drilling 1 along advance of the face direction is 75mm horizontal drilling 5, and horizontal drilling 5 is communicated with adjacent ground drilling 1;
C explosive 8 is filled in horizontal drilling 5 described in step (b) by (), and run through adjacent explosive 8 with detonating fuse 7, and explosive 8 is aqueous gels;
D () is to water filling sealing of hole in ground drilling 1 in step (b) to concordant with ground 11;
E () uses explosive 8 in detonator 6 detonation step (c), explosive 8 explodes and loosens coal seam 4, produces a large amount of crack 10;
F water in ground drilling 1 and horizontal drilling 5 is extracted out by (), gas pumping pipe access ground drilling 1, the gas in extraction coal seam 4.
Embodiment 2
The method of a kind of surface drilling loosening blasting of the present embodiment seat earth release mash gas extraction, comprises the following steps:
(a) cover on work plane earth's surface along advance of the face direction every 300m cut a hole drill diameter be 145mm ground drilling 1 to coal seam 4 floor undulation below 3m place;
B () utilizes " L shape " drilling technique, cutting a hole drill diameter in the bottom of ground drilling 1 along advance of the face direction is 145mm horizontal drilling 5, and horizontal drilling 5 is communicated with adjacent ground drilling 1;
C explosive 8 is filled in horizontal drilling 5 described in step (b) by (), and run through adjacent explosive 8 with detonating fuse 7, and explosive 8 is emulsion;
D () hangs down height more than 300m to water filling sealing of hole in ground drilling 1 in step (b) to water column 2;
E () uses explosive 8 in detonator 6 detonation step (c), explosive 8 explodes and loosens coal seam 4, produces a large amount of crack 10;
F water in ground drilling 1 and horizontal drilling 5 is extracted out by (), gas pumping pipe access ground drilling 1, the gas in extraction coal seam 4.
In blasting process, want the safe distance of retained personnel and plant equipment distance ground drilling 30m, prevent the water in blasting process, slag particle from destroying equipment or hurting personnel.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (6)
1. a method for surface drilling loosening blasting seat earth release mash gas extraction, is characterized in that, comprise the steps:
A () is covered earth's surface and is bored below multiple ground drilling (1) to coal seam (4) floor undulation 2 ~ 3m place along advance of the face direction cutter on work plane;
B () utilizes " L shape " drilling technique, described in step (a), horizontal drilling (5) is bored along advance of the face direction cutter in the bottom of ground drilling (1), and described horizontal drilling (5) is communicated with adjacent described ground drilling (1);
C explosive (8) is filled in horizontal drilling described in step (b) (5) by (), and run through adjacent described explosive (8) with detonating fuse (7);
D () carries out sealing of hole to water filling in ground drilling described in step (a) (1);
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 described in extraction (4).
2. the method for surface drilling loosening blasting seat earth release mash gas extraction according to claim 1, is characterized in that: ground drilling (1) spacing described in step (a) is 200 ~ 300m.
3. the method for surface drilling loosening blasting seat earth release mash gas extraction according to claim 2, is characterized in that: ground drilling described in step (a) (1) diameter is 75 ~ 145mm.
4. the method for surface drilling loosening blasting seat earth release mash gas extraction according to claim 3, is characterized in that: horizontal drilling described in step (b) (5) diameter is identical with described ground drilling (1) diameter.
5. the method for surface drilling loosening blasting seat earth release mash gas extraction according to claim 4, is characterized in that: explosive described in step (c) (8) is aqueous gels or emulsion.
6. the method for surface drilling loosening blasting seat earth release mash gas extraction according to claim 1-5 any one, is characterized in that: ground drilling (1) the water filling sealing of hole described in step (d) hangs down height more than 300m to or water column (2) concordant with ground (11).
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 |
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| CN104329113A true CN104329113A (en) | 2015-02-04 |
| CN104329113B 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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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121644A (en) * | 2016-06-17 | 2016-11-16 | 中国矿业大学 | Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and supporting reinforcement |
| 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 |
| CN106948860A (en) * | 2017-05-27 | 2017-07-14 | 中煤科工集团重庆研究院有限公司 | The method for cooperateing with progressive draining coal seam gas with directional drilling based on U-shaped well |
| CN107120137A (en) * | 2017-07-12 | 2017-09-01 | 安徽理工大学 | A kind of coal roadway tunneling is along seat earth Deephole pre-splitting blasting pumping method |
| CN108708722A (en) * | 2018-03-27 | 2018-10-26 | 山东科技大学 | A method of being used for the efficient prevention bump of low air 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 |
| CN113217081A (en) * | 2021-05-18 | 2021-08-06 | 重庆大学 | Method for eliminating gas by controllable combustion of high-gas low-permeability coal seam |
| CN113669062A (en) * | 2021-09-27 | 2021-11-19 | 重庆大学 | Fault activation type rock burst control method based on ground pressure-bearing blasting |
| RU2788064C1 (en) * | 2022-05-31 | 2023-01-16 | Федеральное Государственное Бюджетное Учреждение Науки Институт Проблем Комплексного Освоения Недр Им. Академика Н.В. Мельникова Российской Академии Наук (Ипкон Ран) | Method for degassing the excavation field during the development of a coal seam with longwalls on uprising |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979835A (en) * | 2010-09-21 | 2011-02-23 | 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 |
| CN1776196B (en) * | 1998-11-20 | 2011-08-10 | Cdx天然气有限公司 | Method and system for accessing subterranean deposits from the surface |
| CN102418549A (en) * | 2011-08-15 | 2012-04-18 | 河南理工大学 | Technical method for extracting coalbed methane from constructed coal development area |
| 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 |
| CN103195466A (en) * | 2013-03-30 | 2013-07-10 | 重庆大学 | Directional water pressure blasting method for improving coal bed gas permeability |
-
2014
- 2014-09-03 CN CN201410446247.6A patent/CN104329113B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776196B (en) * | 1998-11-20 | 2011-08-10 | Cdx天然气有限公司 | Method and system for accessing subterranean deposits from the surface |
| CN101979835A (en) * | 2010-09-21 | 2011-02-23 | 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 |
| CN102418549A (en) * | 2011-08-15 | 2012-04-18 | 河南理工大学 | Technical method for extracting coalbed methane from constructed coal development area |
| CN103195466A (en) * | 2013-03-30 | 2013-07-10 | 重庆大学 | Directional water pressure blasting method for improving coal bed gas permeability |
Cited By (13)
| 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 |
| CN106121644A (en) * | 2016-06-17 | 2016-11-16 | 中国矿业大学 | Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and supporting reinforcement |
| 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 |
| CN106948860A (en) * | 2017-05-27 | 2017-07-14 | 中煤科工集团重庆研究院有限公司 | The method for cooperateing with progressive draining coal seam gas with directional drilling based on U-shaped well |
| 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 |
| CN107120137A (en) * | 2017-07-12 | 2017-09-01 | 安徽理工大学 | A kind of coal roadway tunneling is along seat earth Deephole pre-splitting blasting pumping method |
| CN108708722A (en) * | 2018-03-27 | 2018-10-26 | 山东科技大学 | A method of being used for the efficient prevention bump of low air 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 |
| CN113217081A (en) * | 2021-05-18 | 2021-08-06 | 重庆大学 | Method for eliminating gas by controllable combustion of high-gas low-permeability coal seam |
| 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 |
| CN113669062A (en) * | 2021-09-27 | 2021-11-19 | 重庆大学 | Fault activation type rock burst control method based on ground pressure-bearing blasting |
| CN113669062B (en) * | 2021-09-27 | 2023-11-03 | 重庆大学 | Fault activated rock burst control method based on ground pressure blasting |
| RU2788064C1 (en) * | 2022-05-31 | 2023-01-16 | Федеральное Государственное Бюджетное Учреждение Науки Институт Проблем Комплексного Освоения Недр Им. Академика Н.В. Мельникова Российской Академии Наук (Ипкон Ран) | Method for degassing the excavation field during the development of a coal seam with longwalls on uprising |
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| Publication number | Publication date |
|---|---|
| CN104329113B (en) | 2016-10-05 |
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