关键词: 分层开采, 导水裂隙带, 发育高度, 钻孔冲洗液法

Abstract:

With hybrid analyses of geological and mining settings, the broken height was gotten by the in-situ monitoring， ground borehole flushing fluid loss observation for slicing excavation in hard rocky seams. All above are prerequisite for mechanism of rock masses movement and damage, which is necessary to ensure safe excavation under water

Key words: slice mining, water flowing fractured zone, developing height, borehole flushing fluid method