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以鲍店煤矿六采区3#煤6204工作面为工程背景,采用理论分析和数值模拟的方法对下部采场的应力分布规律进行了研究,得出随着工作面不断接近煤柱边缘超前支承压力峰值会逐渐增加。工作面处于煤柱下时超前支承压力远远大于采空区下的支承压力,因此在有上层煤柱存在的情况下开采时要做好防冲预警和相应的预防措施,以防止冲击地压的发生。
Taking the No.6204 working face of No.6 coal mining area in Baodian Coal Mine as the engineering background, the stress distribution law of the lower stope was studied by theoretical analysis and numerical simulation. It was found that as the working face approached the advanced support of coal pillar edge The pressure peak will gradually increase. When the working face is under pillars, the advance support pressure is much larger than the support pressure under the goaf. Therefore, when there is the upper coal pillars, it is necessary to make the anti-impact warning and the corresponding precautionary measures when mining to prevent the impact pressure happened.