断层间距对隧道纵向稳定性的影响  

Numerical modeling of influence of fault spacengel on longitudinal stability of tunnel

作　　者：刘辉[1] 宋宏伟[1] 唐德康[1] 何永礼[1] 朱小明[1] 

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

出　　处：《黑龙江科技学院学报》2008年第6期447-450,共4页Journal of Heilongjiang Institute of Science and Technology

基　　金：国家重点基础研究973项目(2002CB412703)

摘　　要：针对断层间距对隧道纵向稳定性的影响问题,采用FLAC3D计算模型分析应力及位移的分布规律。结果表明:断层间距越小,隧道纵向稳定性越差;断层间距不同,应力和位移纵向分布规律亦不同;顶板和边帮与断层相交区域为应力降低区,其前后为应力升高区,底板相反。The attempt to investigate the influence of fault space on longitudinal stability entails the simulation of the stress and displacement distributing rules by the finite-difference program FLAC3D. The numerical results show that the smaller of the space of fault was, the poorer longitudinal stability of the tunnel was; the stress and displacement longitudinal distributing rules varied with fault space, and stressreducing region lies in the intersection region formed by roof, side and fault, with stress ascending regions lying before and behind the intersection region while the law of floor is opposite.

关 键 词：断层 隧道 纵向稳定性 数值分析 

分 类 号：TU457[建筑科学—岩土工程]