地下矿山巷道开挖数值模拟初探

Numerical simulation of underground mine roadway excavation

本文通过某地下矿山巷道开挖,围岩强度参数采用Hoek-Brown屈服准则和Mohr-Coulomb强度准则,采用flac软件进行数值模拟,将两种屈服准则的计算出的数据进行比较分析。得出:Hoek-Brown屈服准则可有效反映岩体的非线性破坏特征,接近工程实际,更适于节理岩体的强度计算,计算出的结果可为巷道支护措施提供基础依据,也为矿山进行其他相关研究提供借鉴。

In this article,through underground mine roadway excavation and surrounding rock strength parameters using Hoek Brown-yield criterion and Mohr-Coulomb strength criterion,using flac software to carry on the numerical simulation,two carry on comparative analysis to calculate the data of yield criterion.Concluded that Hoek Brown-yield criterion can effectively reflect the nonlinear damage characteristics of rock mass,close to the engineering practice,the more suitable for the joint rock strength calculation,calculated results can provide basis for basis for roadway support measures,and other related research to provide reference for mine.