煤7开采顶板裂隙带探测研究

查庄煤矿为延长矿井服务年限,提高资源回收率,采用了反程序开采。该文就如何利用了钻探等手段探查下部煤层开采后的裂隙带发育的高度,正确指导安全施工进行了探讨。

For improving the recovery rate of resources and extending the service life of the mine, we used the mining method of reverse procedure. So, we have the discussion that how to use the drilling method to correctly guide the safety construction in exploring the height of development of the roof fissure in the mined lower coal seam