郭屯煤矿工作面正断层下盘防水煤柱留设研究  

Study on Setting of Waterproof Coal Pillar in the Working Face Normal Fault Footwall of Guotun Coal Mine

作　　者：张凯 Zhang Kai(Guotun Coal Mine of Shandong Energy Luxi Mining Industry Company,Shandong Heze 274700)

机构地区：[1]山东能源鲁西矿业公司郭屯煤矿,山东菏泽274700

出　　处：《山东煤炭科技》2022年第8期66-69,共4页Shandong Coal Science and Technology

摘　　要：针对工作面开采引起断层活化导致的突水现象,以郭屯煤矿3301工作面向阳断层为研究背景,运用数值模拟和理论计算方法,深入分析了不同宽度正断层下盘保护煤柱应力塑性区变化规律。模拟结果表明,由于断层的阻隔性,使得超前支承应力在断层上下盘形成了“一大一小”双应力集中区域,模拟结果与理论计算得到保护煤柱为30 m,经过现场实际留设宽度对比间接验证了其可靠性。In view of the occurrence of water inrush caused by fault activation caused by working face mining,taking the Xiangyang fault of 3301 working face in Guotun Coal Mine as the research background,using the methods of numerical simulation and theoretical calculation,the variation law of stress plastic zone of protective coal pillar under normal fault with different width is deeply analyzed.The simulation results show that because of the barrier of the fault,the leading support stress forms a"one big and one small"double stress concentration region in the upper and lower wall of the fault,the simulation results and theoretical calculation show that the protective coal pillar is 30 m.Its reliability is indirectly verified by the comparison of the actual width in the field.

关 键 词：采煤 断层 煤柱 模拟 

分 类 号：TD822.3[矿业工程—煤矿开采]