大直径钻孔代替横贯埋管抽采上隅角瓦斯浅析

Analysis of Gas Drainage in the Upper Corner by Large Diameter Drilling Instead of Cross Buried Pipe

回采工作面U型通风其上隅角容易积聚瓦斯,为解决这一问题,屯兰矿利用大直径钻机在22301瓦斯治理巷施工大直径钻孔替代工作面回风巷与瓦斯治理巷工作面横贯,埋设大直径管路,通过负压抽采上隅角瓦斯,解决了工作面瓦斯超限问题。

It is easy to accumulate gas in the upper corner of U-shaped ventilation in the working face. In order to solve this problem, Tunlan Coal Mine uses a large-diameter drilling machine to construct a large-diameter drilling hole in 22301 gas control lane instead of the cross between the air return lane and the gas control lane, buries a largediameter pipeline, exhausts the gas in the upper corner of the working face by negative pressure, and solves the problem of gas overrun in the working face.