巷道注浆加固围岩稳定参数敏感性分析  

Parameter sensibility analysis for the stability of tunnel surrounding rock strengthened by grouting

作　　者：苗胜军[1] 张云 吴豪伟[1] 刘海波[1] 李江波[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]中交隧道工程局有限公司,北京100011

出　　处：《现代隧道技术》2008年第1期16-20,共5页Modern Tunnelling Technology

基　　金：国家自然科学基金重大项目(50074002)

摘　　要：在玲珑金矿工程地质调查研究等前期工作的基础上,将围岩参数弹性模量E、泊松比!、内聚力C、内摩擦角",以及注浆压力P和注浆时间t作为围岩稳定影响因素,采用无量纲化的敏感性分析方法,通过数值模拟得到各参数条件下巷道二期注浆开挖施工过程中围岩右边墙和底部的位移,进而计算和分析注浆加固过程中各围岩参数及注浆参数对巷道稳定性的影响,以指导巷道开挖、加固与治理。Based on the investigation and research on engineering geology of Linglong gold mine, parameters of surrounding rocks including： elastic modulus E, Poisson＇s ratiotμ , cohesion C, angle of internal frictionφ, and grouting pressure P, time of grouting t were regarded as the affecting factors on surrounding rock stability. By adopting the method of dimensionless sensitivity analysis, displacements of the tunnel right sidewall and invert after secondary grouting under the condition of different parameters were obtained through numerical simulation. And then the influence on surrounding rock stability by rock parameters and grouting parameters in the course of grouting were calculated and analyzed, in order to guide excavation, reinforcement and treatment of the tunnel.

关 键 词：巷道围岩 稳定性 注浆 参数 敏感性 

分 类 号：TD322.4[矿业工程—矿井建设]