吕梁矿区近距离煤层群下邻近层瓦斯抽采方法研究
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摘要
针对吕梁矿区主要矿井属近距离煤层群开采,且上部煤层回采面瓦斯涌出以下邻近层为主的特点,提出了下邻近层瓦斯抽采从瓦斯涌出源头上进行治理,并充分利用开采煤层的扰动卸压作用重点进行"拦截抽采"的抽采技术方法。高家庄煤矿、神州煤矿、赤峪煤矿等煤矿的下邻近层抽采实践表明,针对不同煤层瓦斯条件,通过采取合理的抽采方法,下邻近层卸压增透区瓦斯抽采量和抽采率可明显提高,达到了节省抽采成本、提高抽采效果的目的,对吕梁矿区近距离煤层群条件下邻近层瓦斯治理具有重要的借鉴意义。
Most mines in Lvliang Mining Area are mining close distance coal seam group,and the gas emission below the adjacent layer is the main feature of the upper seam mining face. It is proposed that the lower adjacent layer gas extraction should be controlled from the source of gas emission,and make full use of the disturbance and pressure relief action of the mining coal seam to carry out the "intercepting extraction"technology. The practice of lower adjacent layer gas extraction in Gaojiazhuang Coal Mine,Shenzhou Coal Mine and Chiyu Coal Mine shows that the reasonable extraction method is adopted for different coal seam gas conditions,and the gas extraction flow and extraction rate in the lower adjacent layer pressure relief area can be improved obviously,and the purpose of saving the extraction cost and improving the pumping effect is achieved. It is of great significance to control the adjacent layer gas of near distance coal seam group in Lvliang mining area.
Most mines in Lvliang Mining Area are mining close distance coal seam group,and the gas emission below the adjacent layer is the main feature of the upper seam mining face. It is proposed that the lower adjacent layer gas extraction should be controlled from the source of gas emission,and make full use of the disturbance and pressure relief action of the mining coal seam to carry out the "intercepting extraction"technology. The practice of lower adjacent layer gas extraction in Gaojiazhuang Coal Mine,Shenzhou Coal Mine and Chiyu Coal Mine shows that the reasonable extraction method is adopted for different coal seam gas conditions,and the gas extraction flow and extraction rate in the lower adjacent layer pressure relief area can be improved obviously,and the purpose of saving the extraction cost and improving the pumping effect is achieved. It is of great significance to control the adjacent layer gas of near distance coal seam group in Lvliang mining area.
引文
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[2]王伟,程远平,袁亮,等.深部近距离上保护层底板裂隙演化及卸压瓦斯抽采时效性[J].煤炭学报,2016,41(1):138-148.
[3]富向.邻近层瓦斯抽放技术优选及适用性分析[J].煤矿安全,2008(4):32-34.
[4]周波,程建圣.低透气性突出煤层群瓦斯综合治理技术[J].煤炭工程,2017,49(9):87-90.
[5]高旭,郭建行,张浪,等.近距离突出煤层群煤与瓦斯共采模式研究[J].煤炭工程,2015,47(10):83-86.
[6]吕有厂,王玉杰.深井突出煤层底板巷防治煤与瓦斯突出工程研究[J].煤炭工程,2017,49(11):13-16.
[7]赵晋军.论千米钻机施工工艺及打捞技术[J].机械管理开发,2016(4):26-27.
[8]智宝岩,马新青.高瓦斯矿井近距离煤层群下邻近层瓦斯治理方法研究[J].煤矿开采,2015,20(3):114-117.
[9]徐遵玉.穿层钻孔预抽煤层瓦斯有效半径考察方法研究[J].煤炭工程,2018,50(2):19-22.
[10]程志恒.底抽巷穿层钻孔封孔深度与布孔间距优化研究[J].煤炭科学技术,2017,45(2):76-82.