个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:President of international exchange committee of the Chinese Society of Rock Mechanics and Engineering CSRME
其他任职:国际岩石力学与岩石工程学会(ISRM)中国国家小组副主席
性别:男
毕业院校:东北大学
学位:博士
所在单位:土木工程系
办公地点:综合实验四号楼330
联系方式:tca@mail.neu.edu.cn
Numerical simulation on pillar failure patterns
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论文类型:会议论文
发表时间:2016-08-29
收录刊物:EI
卷号:1
页面范围:373-378
摘要:Mine pillars are in-situ rock left after mining to ensure mine safety. The determination of pillar sizes dictates the cost of mining and mine safety. In this study, the rock fracturing progress analysis program, RFPA, was adopted to simulate pillars of various sizes to understand their failure mechanisms and patterns. The simulation results indicate that with increasing pillar size, the failure mode changes from tensile splitting to shear failure of the pillar with failure initiating from the pillar boundaries. Failure first occurs on the pillar surface and gradually develops toward the core of the pillar. Finally, shear failure occurs in the pillar. With increasing dip angle of the pillar, stress concentration first appears at the four corners, leading to micro-cracking. As the stress in the pillar continuously increases, micro-cracks gradually coalesce. Subsequently, spalling occurs and failure ensures at the pillar core. © 2016 Taylor & Francis Group, London.