针对高应力承压矿柱安全开采的技术难题,铜坑矿在92号矿体矿柱群开采中,深入开展地压控制技术研究,采取预裂爆破与分段凿岩和底部出矿的优化改进方案,并在回采过程中有效进行地压监控预警,顺利采出矿柱矿石31.05万t,取得了良好的社会效益和经济效益。 In order to solve the technical problems of safe mining of high stress bearing pillars, Tongkeng mine deeply studies the ground pressure control technology in the mining of pillar group No. 92 orebody, and adopts the optimization of presplitting blasting, segmented rock drilling and bottoming out Improve the program, and effective in the recovery process of ground pressure monitoring and early warning, successfully mining 310,500 t of ore ore pillar, and achieved good social and economic benefits.