边界元法的巷道应力反分析

应用边界元法程序， 提出了巷道应力反分析的基本方法； 并根据现场的实测结果， 利用边界元法的计算机程序， 反算出地下巷道的水平向场应力， 然后把所算得的水平向场应力作为已知值返回代入边界元法程序， 求出地下巷道周边和围岩的应力、位移和破坏范围等；再据此绘制出曲线图进行分析； 最后把电算结果的巷道位移量与现场观测结果的巷道移近量进行对比．

Stress Analysis of Excavation with the Method of Boundary Element Program

First,it puts forward the basic method of stress analysis of excavation by boundary element program,and uses boundary element program to calculate the horizon field stress.Then,it takes the calculating result of this horizon field stress as known value to return into boundary element program,and calculactes surrounding rock stress,displaments and failure limits of underground excavation according to the in?site measure result.It has also drawn the curve diagrams with these datas for analysing.Finally,it takes the excavation displacement gainned by computer calculation to compare with the excavation displacements gainned by the in?site observation.