路基工程Issue(2)：50-54,5.DOI:10.13379/j.issn.1003-8825.2017.02.12
裂隙岩体中渗流作用对隧道围岩稳定性的影响分析
Influence of Seepage Action in Fractured Rock Mass on Stability of Tunnel Surrounding Rock
摘要
Abstract
When a tunnel runs across the area of joint fissure development,water pressure and joint fissure have effect on the stability of surrounding rock after excavation.Based on a tunnel project,considering fluidstructure interaction and adopting discrete element theory,the influence of water level elevation and normal stiffness of vertical joint on convergence of displacement around the hole,shear stress and plastic zone of surrounding rock and force of supporting structure after the tunnel excavation is analyzed.The results show that within a certain range,the higher the water level elevation and normal stiffness of vertical joint,the smaller the plastic zone of surrounding rock and the inner force of lining structure,the safer the tunnel.关键词
流固耦合/离散元/垂直节理/围岩稳定性/法向刚度Key words
fluid-structure interaction/discrete element/vertical joints/stability of surrounding rock/normal stiffness分类
交通工程引用本文复制引用
王少锋,陈枰良,卢志楷,何悦..裂隙岩体中渗流作用对隧道围岩稳定性的影响分析[J].路基工程,2017,(2):50-54,5.基金项目
国家重点基础研究发展规划(973计划)项目(2011CB013605-5) （973计划）
国家自然科学基金(51378433,51578457) （51378433,51578457）
