煤层顶板钻场远距离探放老空水技术研究与实践

Research and Practice of Gob Water Prospection and Dewater Technology in Far Range in Drilling Field of Coal Seam Roof

为解决无集中放水巷和沿空探放水严重影响掘进效率等难题,在下阶段工作面机巷利用顶板钻场,向采空区施工远距离集中探放水钻孔,采用安装套管、闸阀,进行控制放水的方法探放老空水,解除了沿空掘进巷道的水害威胁,取得明显成效。

To solve problem of low efficiency in the non concentrated dewater tunnel and exploring and discharging empty ponding district, in the next phase, it will use roof drilling field in the roadways of working faces to construct drills to the goaf for gob water prospection and dewater in far range, and use the casing and gate valve to control dewater method to explore and discharge the gob water,which has solved the water threat in driving roadway along uncompacted goaf and achieved remarkable results.