CN102162367A - Arrangement method for gas drainage drill sites of highly-gassy fully-mechanized top-coal caving surface - Google Patents

Arrangement method for gas drainage drill sites of highly-gassy fully-mechanized top-coal caving surface Download PDF

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Publication number
CN102162367A
CN102162367A CN2011100786896A CN201110078689A CN102162367A CN 102162367 A CN102162367 A CN 102162367A CN 2011100786896 A CN2011100786896 A CN 2011100786896A CN 201110078689 A CN201110078689 A CN 201110078689A CN 102162367 A CN102162367 A CN 102162367A
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China
Prior art keywords
gas
drill
drill site
coal
pipe
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Pending
Application number
CN2011100786896A
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Chinese (zh)
Inventor
刘永
李琳
李乃禄
陈成果
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BIN COUNTY WATER CURTAIN CAVE COAL Co Ltd
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BIN COUNTY WATER CURTAIN CAVE COAL Co Ltd
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Application filed by BIN COUNTY WATER CURTAIN CAVE COAL Co Ltd filed Critical BIN COUNTY WATER CURTAIN CAVE COAL Co Ltd
Priority to CN2011100786896A priority Critical patent/CN102162367A/en
Publication of CN102162367A publication Critical patent/CN102162367A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an arrangement method for gas drainage drill sites of a highly-gassy fully-mechanized top-coal caving surface, which comprises the following steps of: constructing the drill sites above a roof of a coal seam of an air return roadway of the fully-mechanized top-coal caving surface; constructing six drill holes in the drill sites, and drilling the drill holes by using a centralizer according to the design direction, wherein the coverage range of the drainage drill hole in the latter drill site on the previous drill site is more than or equal to 50 meters; and after constructing the drill holes, pre-burying an end pipe by using a polyurethane material, and arranging a gas drainage pipe in the end pipe to drain gas. The arrangement method has the advantage that after top coal of the caving surface is discharged, the effused gas rises to a fissure zone and enters the drill holes constructed to the inside of the fissure zone, and is drained by the gas drainage pipe without entering air turn corners again, so the high-position drill holes plays the role of blocking and intercepting the gas.

Description

High gas fully mechanized coal face gas drainage under suction drill site method for arranging
Technical field
The present invention relates to the extraction technology of coal mine gas, be applicable to colliery high gas comprehensive extracting and caving face return air corner gas control, corner gas can be dropped to " safety regulations in coal mine " below the safety value, and can provide abundance is arranged in the gas drainage under suction pipeline, stable, for the concentration of the abundance of gas unit generation.
Background technology
" safety regulations in coal mine " the 133 regulation: as long as have a coal (rock) layer to find gas in a mine, this mine is gaseous mine.Gaseous mine must manage highly gassy mine according to the mine gas grade: the mine relative abundance of methane is greater than 10m 3/ t or mine absolute gas emission rate are greater than 40m 3/ min; In " safety regulations in coal mine " the 134 low gaseous mine, relative abundance of methane is greater than 10m 3/ t or the individual areas (exploiting field or work plane) that has gas to spray are high gas district, and this district should manage by highly gassy mine.
During " safety regulations in coal mine " the 136 exploiting field return airway, getting working face return airway are distinguished and admirable gas density surpass 1.0% or gas concentration lwevel surpass at 1.5% o'clock, must quit work, withdraw from personnel, take measures, handle.
The highly gassy mine fully mechanized coal face will carry out gas drainage under suction when exploitation, just can reach security regulations.After gas drainage under suction, fully mechanized coal face is in the process of pushing to adopt, return air corner gas density is high always, the comprehensive regulation of return air corner gas is the difficult problem that restriction fully mechanized coal face safety pushes to adopt always, corner assembles measures such as the shutoff of spoil bag, increasing face air volume though taked up and down, and gas density transfinited often when caving coal and work plane were pressed.Therefore, in conjunction with high gas fully mechanized coal face actual conditions, solving work plane corner gas exceeding limit problem, is main task of the present invention.
Summary of the invention
The present invention proposes a kind of method for arranging of gas drainage under suction drill site for solving above-mentioned task.
Method for arranging of the present invention is:
The first step: wrong in the drill site of more than the roof of fully mechanized coal face air return way, constructing, drill site plan range in air return way 10~15m, in the roof of drill site height 2~15m more than the top, coal seam;
Second step: six borings of construction in drill site, the orientation, whole hole of boring covers the scope of work plane 1/3rd, whole hole height placement in the above fissure zone of roof 20~60 meters, the drill site spacing is according to 150~200 meters designs, the drill site extraction boring in back covers previous drill site and is not less than 50 meters, and adopts centralizer that boring is crept into by design direction;
The 3rd step: after drilling construction finishes,, in the end pipe gas drainage under suction pipe is installed and is drawn out methane with the pre-buried end pipe of polyamine fat material.
Advantage of the present invention is: after work plane top coal was emitted, the gas of gushing out rose in the fissure zone, and entered and construct to the fissure zone internal drilling, took away by the gas drainage under suction pipeline, no longer entered the return air corner, and the effect of intercepting gas is played in high-order boring.
Through practice explanation, this method is reduced fully mechanized coal face corner gas significantly, reduces at present 0.5% by original 1.5%, and the gas in the work plane return reduces to present 0.18% by original 0.8%.High-order drill site of the wrong formula of this height and the fan drilling technology that draws out methane is an important behave of gas hazard management.High-order drilling construction be six, each boring is different position more than roof all, inoperative and another boring of boring obtains in time additional, extraction is effective.
Description of drawings
Fig. 1 is high-order drill site of high wrong formula and fan-shaped high low level boring layout schematic diagram.
Fig. 2 is that high-order drill site of high wrong formula and fan-shaped high low level borehole sections are arranged schematic diagram.
The specific embodiment
The present invention is concrete to be implemented as described in the summary of the invention, and those skilled in the art's record to specifications can be implemented fully, is not described in detail in this.

Claims (1)

1. one kind high gas fully mechanized coal face gas drainage under suction drill site method for arranging is characterized in that step is as follows:
The first step: wrong in the drill site of more than the roof of fully mechanized coal face air return way, constructing, drill site plan range in air return way 10~15m, in the roof of drill site height 2~15m more than the top, coal seam;
Second step: six borings of construction in drill site, the orientation, whole hole of boring covers the scope of work plane 1/3rd, whole hole height placement in the above fissure zone of roof 20~60 meters, the drill site spacing is according to 150~200 meters designs, the drill site extraction boring in back covers previous drill site and is not less than 50 meters, and adopts centralizer that boring is crept into by design direction;
The 3rd step: after drilling construction finishes,, in the end pipe gas drainage under suction pipe is installed and is drawn out methane with the pre-buried end pipe of polyamine fat material.
CN2011100786896A 2011-03-23 2011-03-23 Arrangement method for gas drainage drill sites of highly-gassy fully-mechanized top-coal caving surface Pending CN102162367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100786896A CN102162367A (en) 2011-03-23 2011-03-23 Arrangement method for gas drainage drill sites of highly-gassy fully-mechanized top-coal caving surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100786896A CN102162367A (en) 2011-03-23 2011-03-23 Arrangement method for gas drainage drill sites of highly-gassy fully-mechanized top-coal caving surface

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CN102162367A true CN102162367A (en) 2011-08-24

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518465A (en) * 2011-12-30 2012-06-27 大同煤矿集团有限责任公司 Method for pumping high-position drilling gas from high gas working face
CN102518464A (en) * 2011-12-09 2012-06-27 中国神华能源股份有限公司 Method for extracting gas at corner on recovery working face in coal mine
CN104074539B (en) * 2014-07-22 2016-05-11 贵州大学 One is held back gas drainage under suction structure and implementation method thereof
CN107989615A (en) * 2017-12-27 2018-05-04 孟思思 Huge thickness hard coal seam release draws out methane Sub-Level Caving coal-mining method
CN109025999A (en) * 2018-09-12 2018-12-18 中国矿业大学 A kind of one three top coal method for weakening
CN109339856A (en) * 2018-11-29 2019-02-15 陕西陕煤铜川矿业有限公司 A kind of method that face gas is administered
CN109899037A (en) * 2019-03-14 2019-06-18 湖南科技大学 A kind of gas pumping method during mining steeply dipping coal seam and after exploitation
CN111101998A (en) * 2020-01-19 2020-05-05 山西晋城无烟煤矿业集团有限责任公司 Method for intercepting gas extracted from directional long drill hole

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CN101117894A (en) * 2007-08-24 2008-02-06 阳泉煤业(集团)有限责任公司 Fully mechanized coal face high suction tunnel lower-returning drilling primary mining gas drainage method
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CN1532374A (en) * 2003-03-18 2004-09-29 淮南矿业(集团)有限责任公司 Method for pumping out gas from mining coal layer roof
CN1534164A (en) * 2003-03-28 2004-10-06 淮南矿业(集团)有限责任公司 Low premeability high gas soft thick coal layer remote pressure relief gas exhausting method
CN101117894A (en) * 2007-08-24 2008-02-06 阳泉煤业(集团)有限责任公司 Fully mechanized coal face high suction tunnel lower-returning drilling primary mining gas drainage method
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518464A (en) * 2011-12-09 2012-06-27 中国神华能源股份有限公司 Method for extracting gas at corner on recovery working face in coal mine
CN102518465A (en) * 2011-12-30 2012-06-27 大同煤矿集团有限责任公司 Method for pumping high-position drilling gas from high gas working face
CN104074539B (en) * 2014-07-22 2016-05-11 贵州大学 One is held back gas drainage under suction structure and implementation method thereof
CN107989615A (en) * 2017-12-27 2018-05-04 孟思思 Huge thickness hard coal seam release draws out methane Sub-Level Caving coal-mining method
CN109025999A (en) * 2018-09-12 2018-12-18 中国矿业大学 A kind of one three top coal method for weakening
CN109339856A (en) * 2018-11-29 2019-02-15 陕西陕煤铜川矿业有限公司 A kind of method that face gas is administered
CN109899037A (en) * 2019-03-14 2019-06-18 湖南科技大学 A kind of gas pumping method during mining steeply dipping coal seam and after exploitation
CN111101998A (en) * 2020-01-19 2020-05-05 山西晋城无烟煤矿业集团有限责任公司 Method for intercepting gas extracted from directional long drill hole
CN111101998B (en) * 2020-01-19 2021-03-19 山西晋城无烟煤矿业集团有限责任公司 Method for intercepting gas extracted from directional long drill hole

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Application publication date: 20110824