深埋特长公路隧道围岩稳定性数值模拟分析

文章以财神梁隧道出口的典型断面为基础进行建模,采用有限元方法,分析在不同的开挖方法（台阶法开挖和全断面）情况下围岩稳定性,通过调整参数,研究围岩应力场和位移场分布与变化的规律,分析其中各种物理、力学因素以及支护结构的受力变化和变形情况,来判断围岩的稳定性,以指导隧道更好的设计和施工。

Analysis of Numerical Simulation on the Stability of Wall Rocks of Deep Extra-long Highway Tunnels

The paper,modeling with the typical cross-section of the exit of Chaishenliang Tunnel as a basis,using finite element method,analyzes the stability of wall rocks with different excavation methods（benching tunneling and full section）,after adjusting parameters and studying the distribution and change rules of the stress fields and displacement fields,analyzes various physical and mechanical factors and the force and form changes of supporting structures to test the stability of wall rocks to improve the design and construction.