某矿4煤采掘时多次发生冲击地压针对该矿实际地质条件,采用数值模拟方法分析上、下解放层开采对4煤被解放层的解放效果及1410工作面上平巷发生冲击地压原因。研究6煤和1煤解放层不同开采时期的应力分布特征,确定4煤被解放层上下部临界卸压角和临界卸压点位置及被解放层回采工作面超前临界卸压范围,为后续4煤工作面开拓开采巷道布置参数优化提供依据。 According to the actual geological conditions of this mine, a numerical simulation method was used to analyze the liberation effect of coal mining on the liberated layer of 4 coal from the upper and lower liberated strata mining and the impact pressure on the upper lane of 1410 working face the reason. Study on the stress distribution characteristics of 6 coal and 1 coal seam during different mining times, determine the critical pressure relief angle and the critical pressure relief point at the upper and lower part of the liberated layer, and the critical pressure relief range of the liberated coal mining face, Coal mining face to open up the mining layout parameter optimization provide basis.