综放工作面大直径钻孔后高抽技术应用探讨

Application of Large-diameter Borehole in High-level Suction Roadway at Fully-mechanized Caving Face

针对一矿在综放工作面后高抽巷施工中的劳动强度大、危险性高和掘进效率低的问题,采用大直径钻孔代替后高抽巷道,实现了工作面初采期间瓦斯的有效控制,数据表明抽采效果良好,也解决了人工施工后高抽巷的各种弊端,表明大直径钻孔代替后高抽巷在解决瓦斯抽放的效果上是安全可靠的。

Aiming at the problems of high labor intensity,high hazard and low driving efficiency in construction of high-level suction roadway at fully-mechanized caving face,the author proposes the application of large-diameter borehole,which can realize the effective gas control at working face during the preliminary mining.