层状岩体抗剪强度的方向性及剪切破坏面的确定  

Anisotropy of shear strength of layered rocks and determination of shear failure plane

作　　者：张玉军[1] 刘谊平[2] 

机构地区：[1]中国科学院武汉岩土力学研究所CRSM开放实验室,湖北武汉430071 [2]中国科学院武汉物理与数学研究所,湖北武汉430071

出　　处：《岩土力学》2001年第3期254-257,共4页Rock and Soil Mechanics

基　　金：国家自然科学基金资助项目(No.59879027)

摘　　要：提出了一种层状岩体的抗剪强度C，值随方向变化的经验表达式，并与前人的实验结果进行了对比，结果表明二者相当接近。利用这一经验表达式和Mohr－Coulomb准则，采用搜索试算的方法，可判断在三维应力条件下层状岩体是否产生剪切破坏面以及产生时的方位。The author suggested an empirical expression in which the shear strength parameters C, φ of a layered rock vary with the direction of a plane with respect to the inclination of cleavage. This expression was compared with the experimental results obtained by former researchers, which shows a good agreement between them. By using the expression and Mohr-Coulomb criterion and employing a search-try method, it can be judged whether a shear failure plane within the layered rock under three dimensional stress condition occurs or not as well as what inclination of the failure plane is.

关 键 词：横观各项同性岩体 抗剪强度 经验表达式 剪切破坏 岩石工程 层状岩体 

分 类 号：TU459.2[建筑科学—岩土工程]