CAJ | 학술논문

针对超化煤矿在工作面回采期间出现瓦斯超限导致回采速度较慢、安全系数降低等不利因素，通过采取高位钻孔抽采裂隙带瓦斯和埋管抽采采空区深部瓦斯等综合治理措施，使采空区内瓦斯大部分通过抽采孔排出，工作面上隅角瓦斯浓度降低到了?0.4%?以下，回风流的瓦斯浓度一直在?0.2%左右；达到预期的效果，取得了良好的经济和社会效益。
침대초화매광재공작면회채기간출현와사초한도치회채속도교만、안전계수강저등불리인소，통과채취고위찬공추채렬극대와사화매관추채채공구심부와사등종합치리조시，사채공구내와사대부분통과추채공배출，공작면상우각와사농도강저도료?0.4%?이하，회풍류적와사농도일직재?0.2%좌우；체도예기적효과，취득료량호적경제화사회효익。
Aimed?at?the?adverse?factors?such?as?slow?recovery?speed?caused?by?gas?transfinite?during?the?recovery?of?super?chemistry?coal?mine?on?the?working?surface?and?the?reduction?of?safety?coefficient,?comprehensive?control?measures?are?adopted?such?as?fissure?zone?gas?extraction?by?high-level?drilling?and?deep?goaf?gas?extraction?through?buried?pipes?and?so?on,?making?the?goaf?gas?discharge?mostly?through?extraction?holes,?with?the?gas?concentration?in?the?upper?corner?of?the?working?surface?down?to?below?0.4%,?and?the?gas?concentration?of?return?current?having?been?about?0.2%;?the?expected?effect?is?achieved,?and?also?good?economic?and?social?benefits.