摘要
复杂应力环境下大断面巷道开挖必然形成开采扰动区,其围岩介质的变形与失稳行为及过程很复杂,主要涉及到围岩力学性态及强度劣化特征、顶部岩层非稳态下沉与水平挤压变形耦合作用诱致动力失稳、深层围岩离层演化至局部冒落失稳。通过对羊场湾煤矿开采扰动区失稳巷道进行全面的工程地质调查,结合现场围岩变形、应力监测,对冒落区段巷道进行了加固治理,其技术方法对类似工程条件下的失稳巷道加固具有一定的指导意义。
Mining heavy section drift must form disturbed area under complicated stress environment, and it process of surronding rock medium deformation and fluctuate action is very complicated, mainly with surronding rock＇s dynam behavior and intension abrasion character, top rock fluctuated sinks and level squeezing deformation made driving force not steady, deep surronding rock absciss layer evolvement untill part inbreak and fluctuating. Through all -round engineering geological survey by Yangcbangwan Coal Mine mining disturbed area flucated drift, combined with scene surronding rock deformation and stress monitor, we strengthened the inbreak drift, whose technology method has certain guiding significance to steady drift of lower similar project condition loss strengthening.
出处
《煤》
2008年第12期1-3,6,共4页
Coal
关键词
扰动区
支护体系
稳定性
应力监测
disturbed area
shoring system
stability
stress monitor
