摘要
依据工作面开采后采空区上覆岩层形成的“O”型圈,通过在采煤工作面顶板中合理布置走向钻孔和开掘高抽巷,配合老塘埋管,对采空区瓦斯进行联合抽放,成功解决了高瓦斯工作面风排瓦斯能力不足和工作面上隅角瓦斯积聚的问题,保障了煤矿安全生产。
According to the ＇O＇ - type crack circle formed in the overlaying strata of the goaf after the working face is mined, through disposing the bore - holes along the roof strike and digging the high drainage roadway reasonably, and combined with disposing the pipe in the goal, the gas in the goaf are drawn out jointly, so the problems that the capacity of drawing out the gas by ventilation is insufficient and that the gas accumulates in the top comer of the working face are solved successfully, meanwhile the safety of the mine are guaranteed.
出处
《煤炭技术》
CAS
2006年第6期76-78,共3页
Coal Technology
关键词
"O"型圈
走向钻孔
高抽巷
瓦斯抽放
＇O＇ - type crack circle
high drainage roadway
bore - holes along roof strike
gas drainage
