断层内超前锚杆支护的数值模拟与参数优化  

Numerical Simulation and Parameter Optimization of Advance Anchor Bolt Support in Fault

作　　者：孙海洋[1,2] 王连国[1,2] 陆银龙[1,2] 黄耀光[1,2] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008 [2]中国矿业大学力学与建筑工程学院,江苏徐州221008

出　　处：《煤矿安全》2015年第8期205-208,共4页Safety in Coal Mines

基　　金：国家重点基础研究发展计划(973计划)资助项目(2014CB046905);国家自然科学基金资助项目(51404245);中国博士后科学基金资助项目(2014M551699)

摘　　要：针对袁店一矿103采区在断层内部掘巷的具体情况,考虑到断层带内围岩较破碎,岩层强度较小,巷道压力较大,顶板管理较困难,给巷道施工带来较大的难度,极易造成前掘后修和支护强度不能满足安全生产需求的局面。因此提出了采用超前锚杆支护的掘巷方案,并利用FLAC3D模拟软件,分析比较了不同角度和间排距等不同支护参数下超前锚杆的支护效果,通过对比分析不同方案下巷道的应力和位移分布,得出了最有效,最经济的超前支护方案。In view of the conditions that driving roadway crossing the fault and taking into account broken surrounding rock in the fault zone,small rock strength,and greater pressure on the roadway of the 103 mining area of Yuandian Mine. These conditions bring greater difficulty such as causing digging after repairing and supporting strength could not meet the production needs of the safety production. So we propose advance anchor bolt support and using FLAC^3 D simulation software to analyze the supporting effect of advance anchor bolt through comparative analysis of stress and displacement distribution of roadway under different parameters. Finally,we get the most effective and economical advance support program.

关 键 词：断层 超前锚杆 FLAC^3D 数值模拟 锚杆支护 巷道支护 

分 类 号：TD353[矿业工程—矿井建设]