NUMERICAL ANALYSIS ON SPATIAL EFFECT OF MECHANICAL PARAMETER OF SURROUNDING ROCKS IN JINCHUAN DEPOSIT Ⅱ
金川二矿区巷道围岩力学参数空间效应数值分析

FEM back-analysis of displacement is used to explore the spatial effect of deformation modulus of surrounding rocks in Jinchuan deposit II. After analysis,it is found that the deformation modulus is changed greatly as a result of excavation and unloading of surrounding rocks which is situated in the environment of high stress field and bad engineering geology conditions. At the same time,the spatial distribution of deformation modulus is obtained.