CN103306714B - Coal seam group with near interval Di Chou holes in lane the mash gas harnessing method in a hole three - Google Patents

Coal seam group with near interval Di Chou holes in lane the mash gas harnessing method in a hole three Download PDF

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CN103306714B
CN103306714B CN201310231598.0A CN201310231598A CN103306714B CN 103306714 B CN103306714 B CN 103306714B CN 201310231598 A CN201310231598 A CN 201310231598A CN 103306714 B CN103306714 B CN 103306714B
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gas
coal seam
seam
boring
coal
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CN103306714A (en
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郭海军
王亮
程远平
刘亚庆
滕广平
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Abstract

Coal seam group with near interval Di Chou holes in lane the mash gas harnessing method in a hole three, belongs to coal mine gas control method.In mine Di Chou lane, utilize the boring in same drill site to carry out gas pumping by with the next stage: first, before seam mining, by the boring in the drill site of mine Di Chou lane, take out the gas in coal seam in advance, the coal and gas prominent eliminating superjacent is dangerous; Secondly, exploitation superjacent, causes underlying seam and coal seam, middle part during superjacent exploitation and adopts release and stress release, utilize the boring of original drill site, is in the gas adopted in release drainage in coal seam, middle part and underlying seam with the mode extraction of negative pressure; Finally, exploitation coal seam, middle part and underlying seam, meanwhile, utilize original boring with the goaf gas of the mode extraction mined bed of negative pressure again.Can increase work efficiency, gas pumping rate is high, cost-saving, and mash gas extraction concentration is high, facilitates the utilization of gas.Comprise the gas control of the coal seam group with near interval in two or more coal seam.

Description

Coal seam group with near interval Di Chou holes in lane the mash gas harnessing method in a hole three
Technical field
The present invention relates to a kind of administering method of coal mine gas, hole the mash gas harnessing method in a hole three in a kind of coal seam group with near interval Di Chou lane specifically.
Background technology
Coal mine gas is one of major casualty threatening Safety of Coal Mine Production, but gas is again the clean energy resource that a kind of reserves enrich very much simultaneously.Now, the most of colliery of China is is all preventing and treating Gas Disaster by extraction, and this not only can realize Safety of Coal Mine Production, can carry out Appropriate application to reduce energy loss again to the gas extracted out.
At present, many mines are all the methods adopting down-hole drilling mash gas extraction, namely arrange drill site at underground coal mine, with drilling machine construction along coal bed drilling or layer-through drilling, again the extraction pipeline in the boring of having constructed and tunnel is coupled together, utilize drainage pump draining coal seam gas.
But, the extraction borehole effect of present underground coal mine is all more single, and the actual dynamics safeguarded is inadequate, under normal circumstances, rethink after the gas in the complete coal seam of extraction take out local gas such as other coal seam or goafs etc. will drilling again, in the gas control of coal seam group with near interval, especially not only increase workload but also cost is quite high.
Summary of the invention
The present invention is the problem for avoiding existing for above-mentioned prior art, provides a kind of gas pumping rate high, economical and practical, holds easy working coal seam group with near interval Di Chou lane and to hole the mash gas harnessing method in a hole three.
The object of the present invention is achieved like this, the coal seam group with near interval that this mash gas harnessing method is applicable to comprise two or more coal seam implements gas control, and concrete grammar is as follows: in mine Di Chou lane, utilize the boring in drill site to carry out gas pumping by with the next stage:
First stage: before seam mining, by the boring in the drill site in mine Di Chou lane, take out the gas in coal seam in advance, the coal and gas prominent eliminating superjacent is dangerous;
Second stage: exploitation superjacent, to cause coal seam, middle part and underlying seam during superjacent exploitation and adopts release and stress release, utilize the boring of original drill site, is in the gas adopted in release drainage in coal seam, middle part and underlying seam with the mode extraction of negative pressure;
Phase III: exploitation coal seam, middle part and underlying seam, meanwhile, utilize the goaf gas of the boring negative pressure extraction mined bed of original drill site again;
Boring in the drill site in described mine Di Chou lane will be upward through three layers of coal; Boring whole process in the drill site in mine Di Chou lane installs steel sleeve protection, will stamp sieve aperture at steel sleeve through the part in coal seam.
Described coal seam is greater than two layers, implements gas control at the coal seam group with near interval being greater than two layers of coal seam.
Beneficial effect: owing to have employed such scheme, 1, by boring hole three use, the both primary gas in extraction coal seam, pumping and mining pressure relief mash gas again, also extraction goaf gas, changes traditional fire damp administering method, has started the new approaches that mine gas is administered in a down-hole drilling extraction; 2, by hole three use of boring, accomplish once to punch, repeatedly Long-Time Service, can reduce a large amount of firedamp taking-out discharging drilling engineering in down-hole and gas drainage under suction tunnel, correspondingly save mine gas control expense.
Advantage: the method can be increased work efficiency, gas pumping rate is high, cost-saving, and mash gas extraction concentration is high, facilitates the utilization of gas.
Accompanying drawing explanation
Figure l is the inventive method schematic diagram.
Fig. 2 is that the inventive method first stage coal-bed gas flows to schematic diagram.
Fig. 3 is that the inventive method second stage coal-bed gas flows to schematic diagram.
Fig. 4 is that the inventive method phase III coal-bed gas flows to schematic diagram.
Fig. 5 is hole structure schematic diagram of the present invention.
In figure, l, Di Chou lane; 2, hole; 3, superjacent; 4, coal seam, middle part; 5, underlying seam; 6, steel sleeve; 7, sieve aperture.
Detailed description of the invention
The coal seam group with near interval that the present invention is applicable to comprise two or more coal seam implements gas control, is described below for the coal seam group with near interval comprising three coal seams to the specific embodiment of the present invention.
Embodiment 1: the concrete grammar for the coal seam group with near interval comprising three coal seams is: in Di Chou lane 1, a drill site is set every 30m, constructed intensive layer-through drilling 2 in 15m region each before and after superjacent 3, boring 2 is through coal seam, middle part 4 and underlying seam 5, and the whole pitch of holes in superjacent 3 is 5m × 5m.Azimuth and the inclination angle of boring can be determined by drill site position and borehole bottom location, thus construct.Want the omnidistance steel sleeve 6 that uses to protect during construction drill 2, sieve aperture 7 will be stamped at steel sleeve 6 through the part in coal seam.
In concrete enforcement, the boring 2 in same drill site is utilized to carry out gas pumping by with the next stage:
First stage: before seam mining, by the boring 2 in the drill site in mine Di Chou lane 1, take out the gas in coal seam in advance, the coal and gas prominent eliminating superjacent 3 is dangerous.
Second stage: exploitation superjacent 3, when superjacent 3 is exploited, coal seam, middle part 4 and underlying seam 5 are caused and adopt release and stress release, utilize the boring 2 of original drill site, be in the gas adopted in release drainage in coal seam 4, middle part and underlying seam 5 with the mode extraction of negative pressure.
Phase III: exploitation coal seam 4, middle part and underlying seam 5, meanwhile, utilize the goaf gas of the boring 2 negative pressure extraction mined bed of original drill site again.
Described coal seam is greater than two layers, implements gas control at the coal seam group with near interval being greater than two layers of coal seam.

Claims (1)

1. hole the mash gas harnessing method in a hole three in a coal seam group with near interval Di Chou lane, it is characterized in that: exploitation superjacent, in Di Chou lane, a drill site is set every 30m, constructed intensive layer-through drilling in 15m region each before and after superjacent, boring is through coal seam, middle part and underlying seam, and the whole pitch of holes in superjacent is 5m × 5m;
Concrete grammar is as follows: in mine Di Chou lane (1), utilize the boring (2) in drill site to carry out gas pumping by with the next stage:
First stage: before seam mining, by the boring (2) in the drill site in mine Di Chou lane (1), take out the gas in coal seam in advance, the coal and gas prominent eliminating superjacent (3) is dangerous;
Second stage: exploitation superjacent (3), during superjacent (3) exploitation, coal seam, middle part (4) and underlying seam (5) are caused and adopt release and stress release, utilize the boring (2) of original drill site, be in the gas adopted in release drainage in coal seam, middle part (4) and underlying seam (5) with the mode extraction of negative pressure;
Phase III: exploitation coal seam, middle part (4) and underlying seam (5), meanwhile, utilize the goaf gas of boring (2) the negative pressure extraction mined bed of original drill site again;
Boring (2) in the drill site in described mine Di Chou lane (1) will be upward through three coal seams; Boring (2) whole process in the drill site in mine Di Chou lane (1) installs steel sleeve (6) protection, will stamp sieve aperture (7) at steel sleeve (6) through the part in coal seam;
Described coal seam is greater than two layers, implements gas control at the coal seam group with near interval being greater than two layers of coal seam.
CN201310231598.0A 2013-06-09 2013-06-09 Coal seam group with near interval Di Chou holes in lane the mash gas harnessing method in a hole three Active CN103306714B (en)

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CN103758560B (en) * 2014-01-14 2015-11-18 中国矿业大学 A kind of multiple topping packet zone mash gas harnessing method that goes forward one by one
CN104047629B (en) * 2014-06-25 2016-05-18 中国矿业大学 The method that thin coal bed fully-mechanized mining gob side entry retaining directional drilling extraction closes on lower coal-bed gas
CN104481578B (en) * 2014-11-27 2016-04-20 辽宁工程技术大学 A kind of high gas layer large-mining-height working surface mash gas harnessing method
CN104612748A (en) * 2015-02-04 2015-05-13 张丽军 Coal-mass gas extraction method and device
CN104863629B (en) * 2015-06-11 2017-03-01 中国矿业大学 A kind of method taking out absciss layer gas and draining slip casting under overlying strata using combined drilling and counterboring
CN105298538B (en) * 2015-09-30 2017-06-06 淮北矿业(集团)有限责任公司 The dual-purpose method in a hole of grouting filling is realized using ground gas extraction borehole
CN105201548A (en) * 2015-10-10 2015-12-30 山西晋煤集团技术研究院有限责任公司 Horizontal well pressure relief extraction method
CN109899105B (en) * 2017-12-07 2021-02-23 陇东学院 Low-level multi-order cross-layer drilling gas extraction method for coal-rock interbed coal seam
CN108301866B (en) * 2018-04-16 2019-05-07 中煤科工集团西安研究院有限公司 Mining of closed distance coal seam group adjacent layer gas pressure relief directional drilling stops pumping method
CN111520183A (en) * 2020-05-13 2020-08-11 安徽理工大学 Method for treating gas generated by mining, blasting, roof cutting, pressure relief and permeability improvement of coal seam group under thick-layer sandstone
CN111594265A (en) * 2020-05-20 2020-08-28 陕西正通煤业有限责任公司 One-hole dual-purpose technology capable of meeting underground pressure relief and hydrogen sulfide treatment requirements
CN114278363A (en) * 2021-12-21 2022-04-05 贵州盘江精煤股份有限公司 Outburst prevention method for short-distance coal seam group area of middling coal group

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