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针对山东某煤矿地表塌陷积水坑下开采3#煤问题,分析了煤矿开采引起的地表塌陷量;采用“双端堵水器”技术,实测了3#煤开采“两带”发育高度,与经验公式预计、UDEC模拟值比较,确定导水裂隙带高度为47.75 m,3#煤开采安全防水煤岩柱高度为70 m;并利用FLAC软件,模拟了不同落差的断层在不同煤柱宽度时受水威协程度。结果表明,该煤矿可以在积水区下进行安全开采。
Aiming at the problem of 3 # coal mining under the water hole of a subsidence collapse in a coal mine in Shandong Province, the amount of surface subsidence caused by coal mining was analyzed. The “# 2 coal” According to the predicted value of empirical formula and the UDEC simulation value, the height of water-conducting fractured zone is 47.75 m and that of 3 # coal mining is 70 m. The FLAC software is used to simulate the fault with different fall in different Pillar width by the water Wei Association level. The results show that the coal mine can be safe mining in the water area.