某隧道在不同侧压系数条件下的FLAC3 D数值分析

摘要

运用FLAC3D数值方法对某隧道围岩进行开挖模拟，计算中采用摩尔—库仑弹塑性计算模型。通过计算得出在不同侧压系数的条件下，构造应力对隧道拱顶下沉、边墙水平收敛大小以及塑性区的影响，为隧道工程设计与施工提供科学的参考。%The simulation of excavation on the surrounding rock of tunnel was carried out by using the software FLAC3D.During the simulation,the Mohr-Coulomb model was used.This simulation offers tunnel vault subsid-ence,horizontal convergence in the boundary wall and plastic zone of surrounding rock,which provides scientific reference for tunnel engineering design and construction.