摘要
借助FLAC3D,以某矿为背景,通过研究不同深度条件下大断面巷道的围岩应力、变形及破裂规律,得到当深度介于>600 m时,大断面巷道围岩特性有向软岩转化的趋势,围岩表现出十分特殊的破裂规律。600 m即为该矿区的的岩石软化的临界深度。
By means of FLAC^3D,took a mine as the background,studying the different depths under the conditions of large sections of roadway surrounding rock stress,deformation and rupture law,the paper get the trend of large section roadway characteristics changed into soft rock,and surrounding rock showed very special broken laws when the depth is more than 600m.the critical depth for softening rock of the mine is 600 m.
出处
《煤矿安全》
CAS
北大核心
2012年第1期160-163,共4页
Safety in Coal Mines
基金
国家重点基础研究发展计划(973)资助项目(2010CB226805)
国家自然科学基金资助项目(50874103)
江苏省自然科学基金资助项目(BK2008135)
国家重点实验室开放基金资助项目(SKLGDUEK0905)
关键词
软岩巷道
破裂规律
临界深度
数值研究
soft rock roadway
rupture law
critical depth
numerical study
