胡家河煤矿主井井筒冻结壁岩石力学特性研究  

Study on rock mechanical properties of frozen wall of main shaft in Hujiahe Coal Mine

作　　者：杨更社[1] 奚家米[1] 王宗金 程磊[1] 李慧军[1] 

机构地区：[1]西安科技大学建筑与土木工程学院,陕西西安710054 [2]中煤矿山建设有限责任公司特殊凿井公司冻结工程处,安徽淮北235037

出　　处：《煤炭学报》2010年第4期565-570,共6页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50974102;40872177);教育部博士点基金资助项目(20070704001)

摘　　要：以陕西胡家河煤矿主井井筒选取的煤岩及砂岩作为具有代表性的岩样,在MTS815试验机上进行不同围压及不同冻结温度条件下的单轴及三轴压缩试验,分析煤岩及砂岩在相同围压不同冻结温度条件下及相同冻结温度不同围压条件下的强度特性,并对2种不同岩样的同一性和差异性进行了比较。结果表明,煤岩和砂岩在冻结的效应方面有着明显的差异性,富水砂岩冻结后对温度的敏感程度要高于煤岩,主要原因是其岩石的内部结构性的差异。Two typical soft rocks that are coal-rock and sandstone were obtained from engineering sites of Hujiahe Coal Mine shaft.The uni-axial compression tests and tri-axial compression tests were conducted on the two types of soft rock at different frozen temperature and different confining pressures.The strength and deformation characteristics under these conditions were analyzed .And their identity and difference were compared either.The results show that due to the internal structural difference,the frozen effect of sandstone and coal exits obvious otherness.Frozen water-rich sandstone is more sensitivity to temperature than that of coal.

关 键 词：主井 冻结壁 岩石力学 特性 

分 类 号：TD265.32[矿业工程—矿井建设]