Stress Analysis of Excavation with the Method of Boundary Element Program

Abstract：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.

Keyword：boundary element program;stress analysis;horizon field stress;surrounding rock;