摘要
针对振兴煤矿在1501采面倾斜上山回采期间出现瓦斯超限导致瓦斯燃烧的事故,采取了高位钻孔抽采裂隙带瓦斯、埋管抽采采空区深部瓦斯等综合治理瓦斯措施,结果表明,采空区的瓦斯大部分都通过抽采孔而排出,工作面上隅角的瓦斯浓度降低到了0.5%以下,回风流的瓦斯浓度一直在0.3%左右。
Aiming at the coal burning accident caused by gas content over limit during excavating and mining inclined seam of No.1501 working face in Zhenxing coal mine,the comprehensive control measures,such as gas drainage by high-position drilling in fractured zone and by buried pipe in goaf,were adopted.The results showed that most of gas in goaf was drained from boreholes.The gas concentration in the upper corner of working face decreased to below 0.5% and that in return air was always kept at 0.3%.
出处
《中国煤炭》
北大核心
2011年第5期108-109,112,共3页
China Coal
关键词
倾斜长壁采煤法
高位钻孔
瓦斯抽采
裂隙带
inclined longwall mining
high-position drilling
gas drainage
fractured zone
