锚固体参数对冲击危险性巷道围岩稳定性的影响分析

Analysis of Influence of Anchor Parameters on Stability of Surrounding Rock of Roadway with Rock Burst Hazard

针对冲击危险性的锚网支护类回采巷道,运用动力学理论分析了巷道锚固体抑制冲击矿压灾害机理,采用数值模拟软件FLAC3D研究了不同锚固体参数对冲击危险性巷道围岩稳定性的影响程度。研究结果表明,巷道围岩变形量的主要影响因素是锚杆长度与锚杆间距,巷道巷帮变形量对锚固体参数的灵敏度反应远高于巷道顶、底板。

For operation roadway of anchor net support with rock burst hazard,the paper analyzed mechanism that anchor of roadway restrains hazard of pressure bump by use of dynamic theory and researched influence degree of different anchor parameters on surrounding rock of roadway with rock burst hazard by use of numerical simulation software FLAC3D.The research result showed that main influencing factors of deformation of surrounding rock of roadway are lengths and distances of anchor bolt,sensitivity of deformation of roadside for anchor parameters is higher than roof and bottom of roadway.