岩石分形节理光弹实验与数值模拟研究  

Study on photoelastic experiment and numerical simulation of the fractal rock joints

作　　者：谢卫红[1] 卢爱红[1] 李顺才[1] 钟卫平[1] 

机构地区：[1]中国矿业大学理学院,江苏徐州221008

出　　处：《辽宁工程技术大学学报（自然科学版）》2004年第1期35-37,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家杰出青年科学基金(59425003);国家教委跨世纪优秀人才专项基金资助项目(59425003)

摘　　要：从分形几何的观点出发,根据岩石结构面具有统计自相似特征,采用Mandelbrot-Weierstrass函数在聚碳酸脂板人为生成不同分维的分形曲线来模拟岩石节理不同的粗糙度,对该试样进行了一系列单压和压剪光弹实验。运用ANSYS系统,通过对模拟分形节理实验过程的数值模拟,研究了定量刻划节理粗糙性的分维对应力场分布变化的影响,并与光弹实验结果作了对比分析。研究表明,数值模拟结果与光弹实验结果有较好的一致。Based on the fractal geometry viewpoints and good self-similarity of structure surface, Mandelbrot-Weierstrass function are used to simulate the joint surface with different roughness of the real joint, which contruct a model made with polyvinyl carbonic. A series of uniaxial compression and compression-shear photoelastic experiments are carried out for samples. The influence of the fractal dimension which quantitatively describes the roughness of joint on stress field distribution can be analyzed by the software ANSYS, and are compared with photoelastic experiment results. Studies indicate that numerical simulation results are similar to photoelastic experiment results.

关 键 词：岩石 分形节理 光弹实验 数值模拟 粗糙度 岩体力学 结构面 

分 类 号：TD313.5[矿业工程—矿井建设]