摘要
运用数值分析软件和有限元法的基本原理,对半圆拱形巷道在不同的侧压系数条件下的围岩应力状态进行数值模拟和分析,总结了半圆拱形巷道围岩应力的一些分布规律,巷道周边环向应力随原岩侧压系数变化的线性关系,确定了环向拉应力产生时侧压系数的关键值。
Numerical simulation and analysis are made on surrounding rock stress state of arched tunnel under the condition of different lateral pressure coefficients by numerical analysis software and basic principle of the finite element method. Some distribution rules of surrounding rock stress of arched tunnel and linear relation of tunnel circumferential stress and the lateral pressure coefficients of initial rock are summarized. Key values of the lateral pressure coefficients are determined as circumferential tensile stress produces.
出处
《矿业快报》
2008年第3期22-25,共4页
Express Information of Mining Industry
关键词
数值分析软件
原岩应力
围岩应力
半圆拱形巷道
Numerical analysis
Initial rock stress
Surrounding rock stress
Arched tunnel
Stress distribution
