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以色连煤矿河床下煤层开采为工程背景,采用理论计算、数值模拟和现场实测相结合的方法,对2_(-2)上煤层覆岩导水裂隙带发育高度进行研究。观测及模拟结果表明,色连煤矿2-2上煤覆岩导水裂隙带最大发育高度73 m,为矿井防治水和保水采煤提供设计依据。
The coal seam mining under the bed of the coal seam in the coal seam is the engineering background, and the developmental height of the water - conducted fractured zone in the overlying strata of 2 _ (- 2) seam is studied by the method of theoretical calculation, numerical simulation and field measurement. The observation and simulation results show that the maximal development height of water-conducting fractured zone of 2-2 overlying coal seam in Selian Coal Mine is 73 m, providing design basis for mine water control and water-holding coal mining.