岩爆应力状态分析  

ON THE STRESS STATE IN ROCK BURST

作　　者：张金明[1] 章青[1] 李彦彬[2] 

机构地区：[1]河海大学土木学院,南京210098 [2]华北水利水电学院,郑州450045

出　　处：《安徽建筑工业学院学报（自然科学版）》2002年第4期17-19,共3页Journal of Anhui Institute of Architecture(Natural Science)

摘　　要：分析了地下洞室围岩的应力状态 ,研究了岩爆极限深度问题 ,分析了应力路径的影响。结果表明 ,岩爆的极限深度随水平地应力与垂直地应力比值的增大而减少 。By means of the stress state analyses on the rockmass surrounding openings ,the stress state of rock burst and the limiting depth of rock burst in rocks are studied. The paper analyses the effect of the stress route.The research result show that the rock burst of flake-splitting patern takes place around the opening's surface under the biaxial compressive stress state whereas that of shearing-dislocation patern takes place inside the rockmass. Rock burst's limit depth reduces with the ratio increase of the level and vertical crustal stress, and the rock burst,to a certain degree,is behind schedule .

关 键 词：岩爆 极限深度 临界深度 应力状态 应力路径 地下洞室 围岩 

分 类 号：TD311[矿业工程—矿井建设] TD324