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以某矿6号煤层的残煤区为背景,采用RFPA软件对规则和不规则煤柱情况下残煤开采进行了数值模拟实验,并对工作面前方煤柱(煤体)进行了受力分析及比较。研究表明:在残煤开采中随着煤柱宽度的逐渐减小,工作面来压步距相应减小,工作面前方支承压力峰值、峰值位置距工作面距离、峰值范围和工作面前方20m煤柱中应力都相应增大。
Based on the residual coal area of No. 6 coal seam in a mine, RFPA software was used to simulate the residual coal mining under regular and irregular coal pillars, and the coal pillar (coal body) in front of the working face was subjected to force analysis And compare. The results show that with the decreasing of coal pillar width, the pressure step of working face decreases correspondingly, the peak pressure of supporting face in front of working face, the distance between peak position and working face, the peak range and 20m coal in front of working face The column stress increases accordingly.