摘要
对某隧道岩层交汇土石交界段隧道开挖与支护的施工过程进行三维有限元数值模拟,对比分析正台阶留核心土法和双侧壁导坑法两种工法施工过程中的围岩应力和隧道周边收敛变形随时间和施工工序的变化规律,从整体上把握隧道施工的效果,找出有利于围岩稳定的最优开挖方案。
The construction process of tunnel excavation and supporting in the junction, of soil and rock of the rock intersection is numerical simulated by 3D finite element method , the variation laws of surrounding rock stress and convergence deformation surrounding tunnel along with time and construction process by two excava- tion schemes, which are bench reservation core soil and both sides lyzed. Then according to the tunnel construction effect in the whole, the surrounding rock stability. heading method, are compared and ana- the best excavation scheme is selected for
出处
《勘察科学技术》
2012年第3期9-12,28,共5页
Site Investigation Science and Technology
关键词
隧道开挖与支护
岩层交汇
数值模拟
正台阶留核心土法
双侧壁导坑法
tunnel excavation and supporting
rock intersection
numerical simulation
bench reservation coresoil method
both sides heading method
