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通过对老虎台矿区的厚煤层开采过程中地压问题的现场调查,分析了该矿冲击地压显现突出的原因,应用RFPA系统对厚煤层开采过程周围应力场进行了数值模拟,模拟结果再现了该矿区软岩层开采过程中冒落的动态发展过程。通过对煤层开采过程中应力场的演化过程,说明内、外应力场的存在、开采过程、煤体力学性质对冲击地压发生的影响。对老虎台矿区开采过程中冲击地压的预测与防治具有借鉴意义。
Through the field investigation of the ground pressure in the process of the thick seam mining in Laohutai mining area, the reason that the rockburst appears prominent in this mine is analyzed. The RFPA system is used to simulate the surrounding stress field in the process of thick seam mining. The simulation results are reproduced The dynamic development process of the caving during the mining of soft rock in this mining area. Through the evolution process of the stress field in the process of coal seam mining, the influence of internal and external stress field, mining process and the mechanical properties of coal mass on the occurrence of rockburst is illustrated. It is of reference significance to predict, prevent and control the rockburst in the process of mining in Huntai Mining Area.