【摘要】 本文结合城子矿—250m水平孤老煤柱安全采出的实践,论述了防治冲击地压措施中的几个问题。其中,主要有合理选择、开拓布署、超前卸压爆破、卸压钻孔及避峰送巷等。更多还原

【Abstract】 In combination with the practice that the isolated old pillars at level-250m in Cheng Zi mine are extracted out, the paper discusses some problems about measures of prevention and remedy of rock-burst, such as choosing reasonable engineering plan, unloading blas and unloading drilling before mining coal sems and avoiding peak value of stress in coal seam for driving headings, etc.更多还原