不同洞形围岩弹塑性稳定性的计算机数值仿真分析

Computer Numerical Simulation Analyses for the Wall Rock Elastic-plastic Stability of Different Shape′s Hole

摘要:

基于弹塑性围岩理论，应用ANSYS有限元软件，采用Drucker-Prager准则，对不同形状的洞室进行了有限元数值模拟分析，通过沿计算模型径向的应力、位移的分析，更清楚地了解洞室围岩的内部状况，使得在洞形选择上有所帮助，避免选择稳定性差的形状；同时在洞形确定后，为后期支护结构的设计能够提出可预见性的指导。

Abstract:

Authors Base on elastic-plastic wall rock of theory, apply ANSYS FEM software, and adopt Drucker-Prager rules. FEM numerical simulation is used to analyze different shapes′hole, by means of the analysis of radial displacement and stress, even more distinctly realize the status of wall rock of hole ,to help the architect to confirm hole's shape, and avoid to the bad stability of shape; at the same time to be able to instruct the design of supporting structure.