岩土力学Issue(10)：2847-2856,10.
深部厚顶煤巷道围岩变形破坏机制模型试验研究
Model test study of surrounding rock deformation and failure mechanism of deep roadway with thick top coal
摘要
Abstract
In order to research the surrounding rock deformation and failure mechanism of deep thick top coal roadway, taking Zhaolou coal mine in Juye mining area as engineering background, a large scale model test is carried out, the stress and displacement evolution laws of surrounding rock supported by pressure relief anchor cable box beam supporting programs are researched. And the results show:the vertical stress release is more intense in roof and floor of the roadway than that in the side wall, while the horizontal stress is the opposite;central of roadway roof is the main position of vertical stress release. By being compared with field test results, three main deformation and failure characters of the surrounding rock of deep thick top coal roadway are summarized: the deformation and failure of roof is more serious than that of side wall and floor; deformation and failure of roadway roof occurrs mainly in the coal below coal-rock interface; central of roadway roof is the key position of the deformation and failure. The corresponding mechanism is analyzed: the factors such as soft and broken features of roof coal, its poor self-supporting ability, vertical stress releasing more severe in roof and its central, poor force state of rectangle roadway, cause low radial stress of surrounding rock in roof, serve bulking deformation, bending deformation and roof separation, and worsen the roof force structure, finally, they lead to controlling trouble of roadway roof.关键词
厚顶煤巷道/让压型锚索箱梁/模型试验/变形破坏/机制/关键部位Key words
roadway with thick top coal/pressure relief anchor cable box beam/model test/deformation and failure/mechanism/key position分类
矿业与冶金引用本文复制引用
李为腾,李术才,王琦,阮国强,左金忠,刘文江,王德超,王洪涛..深部厚顶煤巷道围岩变形破坏机制模型试验研究[J].岩土力学,2013,(10):2847-2856,10.基金项目
国家自然科学基金（No.51304125）；中国博士后科学基金面上资助（No.2013M540548）；矿山灾害预防控制国家重点实验室培育基地开放基金（No. MDPC2012KF11）。 （）
