注浆加固对深部巷道围岩应力集中的控制研究  

Research on Grouting Strengthening in Control of Stress Concentration in Deep Tunnel Surrounding Rock

作　　者：王若帆[1] 张科学 神文龙[1] 崔昊[1] 

机构地区：[1]中国矿业大学矿业工程学院,江苏徐州221116 [2]中国煤炭科工集团北京天地玛珂电液控制系统有限公司,北京100013

出　　处：《煤炭技术》2016年第1期65-68,共4页Coal Technology

基　　金：国家自然科学基金项目(51174195);全国博士学位论文作者专项资金资助项目(200760);煤炭资源与安全开采国家重点实验室自主研究课题资助(SKLCRSM08X04)

摘　　要：针对潞安集团余吾煤业有限公司+400 m水平轨道大巷在开挖后出现的巷道断面缩小、喷浆层开裂问题,综合采用现场地质调研、数值模拟计算、围岩位移监测的方法,分析研究了深部巷道围岩变形破坏机理以及深部巷道围岩注浆加固技术。注浆加固技术可显著减小围岩塑性区分布,同时减小两帮垂直应力与顶底板水平应力集中程度,改善顶底板围岩的完整性和承载性能。It was found that the tunnel section reduced and shotcrete layer cracking in ＋400 m level orbital tunnel in Yuwu company Lu＇an mining group,analyzed the deformation and failure mechanism of deep tunnel surrounding rock as well as the grouting reinforcement technique in deep tunnel. And revealed that grouting reinforcement technique could reduce the distribution of plastic zone in surrounding rock significantly as well as the level of vertical stress concentration in rib and horizontal stress concentration in roof and floor. And it could improve the completeness and the bearing performance of rock mass in roof and floor.

关 键 词：深部巷道 注浆加固 塑性区 应力集中 

分 类 号：TD322[矿业工程—矿井建设]