破裂岩石的力学性质分析  

Analysis of Properties of Broken Rock

作　　者：杨米加[1] 贺永年[1] 

机构地区：[1]中国矿业大学建筑工程学院,江苏徐州221008

出　　处：《中国矿业大学学报》2001年第1期9-13,共5页Journal of China University of Mining & Technology

摘　　要：在分析岩石破裂结构形式的基础上 ,重点建立了含单裂隙破裂岩石的强度与破裂结构形式和应力状态变化的关系 ,分析了含裂隙岩石 (体 )内部应力状态的不均匀性及裂隙内部应力随外部荷载变化而发生的主应力偏转等因素对整个含裂隙岩石结构体强度的影响 ,并进一步推广到多裂隙岩石的强度分析 .所得结果可用于有限元分析 .Based on the analysis of broken rock structure, the relation between broken rock strength and its different structures was discussed, and some useful results were obtained. The research shows that the magnitude and direction of inner stresses on the broken surface of a rock sample are different from those of the stresses on the boundary of the rock sample and change with loading stresses, and the strength of broken rock is determined by inner stress on the broken surface and loading stresses on a rock block. Rock usually fails along the broken surface, but sometimes it may fail across the rock block. A new method which can be united with the normal method was given.

关 键 词：破裂岩石 破裂结构形式 强度 应力 力学性质 外部载荷 有限元 

分 类 号：TU452[建筑科学—岩土工程] TD313[建筑科学—土工工程]