This paper introduced a new method for it, ie continuous stoping of room and pillar in stages and to fill mined bed with falling roof by deep-hole blasting.
本文提出了一种矿房矿柱阶段性连续回采，深孔放顶处理空区的采矿方法。
The hydrogeologic condition of Danhou mine is complex, and the sublevel coal is threatened by O. L. water. It is very difficult that thin confining bed coal is mined under pressure.
单侯矿井水文地质条件比较复杂，下部煤层受奥灰水威胁，薄隔水层带压开采问题非常突出。
The hydrogeologic condition of Danhou mine is complex, and the sublevel coal is threatened by O. L. water. It is very difficult that thin confining bed coal is mined under pressure.
单侯矿井水文地质条件比较复杂，下部煤层受奥灰水威胁，薄隔水层带压开采问题非常突出。
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