煤矿安全2017，Vol.48Issue(6)：138-141,4.DOI:10.13347/j.cnki.mkaq.2017.06.037
煤矿冲击地压巷道支护-卸压协同控制技术
Support and Pressure Relief Coordination Control Technique for Rock-burst Roadway in Deep Coal Mine
摘要
Abstract
The paper proposes support and pressure relief coordination control technique based on the rock burst reasons of coal roadway in deep mine,carries out FLAC2D numerical simulation analysis and engineering practice at 7121 face of a mine.The results indicate that rock-burst is induced by dynamic and static load superposition that the high static loads play a dominant effect while strong dynamic loads play an induced function.The support and pressure relief coordination control technique with the association of inner strong support body of high strength anchor,weak structure body of large-diameter borehole and external strong structure body of primary rock stress can improve the resistance,reduce and prevention capacity of rock-burst.The peak stress of support and pressure relief coordination scheme is 30.24 MPa,the convergence deformation of sides is 45.52 mm and the plastic region is the greatest,which has the least rock-burst hazard.The field monitoring effect of surrounding rock deformation is significant.关键词
冲击地压/数值模拟/锚网索/大直径钻孔/支护-卸压协同/围岩控制/巷道支护Key words
rock-burst/numerical simulation/bolt-mesh-anchor support/large-diameter borehole/support and pressure relief coordination/surrounding rock control/roadway support分类
矿业与冶金引用本文复制引用
曾晋,刘振江..煤矿冲击地压巷道支护-卸压协同控制技术[J].煤矿安全,2017,48(6):138-141,4.基金项目
四川省教育厅基金资助项目(2016ZB0407) （2016ZB0407）
成都理工大学工程技术学院泥石流灾害团体科学基金资助项目(C122016020) （C122016020）
