岩石节理压剪破坏的数值分析  

Numerical Analysis of Rock Joint Failure Under Compression-shear Stress

作　　者：钟卫平[1] 高峰[1] 沈晓明[1] 

机构地区：[1]中国矿业大学理学院,徐州221008

出　　处：《武汉理工大学学报》2007年第1期102-104,117,共4页Journal of Wuhan University of Technology

基　　金："973"国家重点基础研究发展计划项目(2002CB412705);中国矿业大学青年科研基金(A200404)

摘　　要：基于分形几何理论,采用Weierstrass-Mandelbrot函数生成不同分维的分形曲线模拟岩石节理不同的粗糙度。运用ANSYS软件对分形节理在压剪荷载作用下的应力场及位移场进行了数值模拟,分析了节理主应力及位移与分形维数的关系,在此基础上讨论了节理的分形维数对节理破坏失稳的影响。数值分析结果与已有的实验结果相吻合。Based on the fractal geometry theory, Weierstrass-Mandelbrot function was used to simulate the rock joint surface with different roughness. The stress filed and deformation field of fractal joint under compression-shear stress were simulated by means of ANSYS software. The relationship of principal stress and deformation to fractal dimension was analyzed. Also, the influence of fractal dimension on rock joint failure was discussed. The numerical results were corresponding with those of previous experiment.

关 键 词：岩石力学 岩石节理 数值分析 破坏机理 分形维数 

分 类 号：TD312[矿业工程—矿井建设]