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结合赵固一矿11011工作面的具体地质条件,综合运用数值模拟和地表钻孔冲洗液漏失量观测方法,对采空区上覆岩层冒落带和裂隙带的高度进行了分析。工业性实验表明通过数值模拟确定的“两带”高度是合理的,进而确定了上分层开采防水安全煤岩柱尺寸及合理安全开采厚度。
According to the specific geological conditions of 11011 working face in Zhaoguanyi Mine, the height of the caving zone and fracture zone of the overburden in the mined-out area was analyzed by using the numerical simulation and observation method of surface fluid leakage. The industrial experiments show that it is reasonable to determine the height of the two strata by numerical simulation, and then determine the size of the water column and the safe and safe mining thickness of strata mining.