The coupling analysis of temperature field and stress field in rock surrounding deep roadways

摘要：

The geothermal temperature is high in deep mines,so variation of temperature field in surrounding rock is larger due to roadway ventilation,and the higher thermal stress is caused in rock surrounding deep roadways.Therefore the influence of temperature field variation on surrounding rock stability must be taken into account in deep mining.The study on deformation and failure behavior of surrounding rock should be based on the coupled temperature filed and stress field analysis.In this paper,the hard sandstone roadway is given as an example.The coupled temperature field and stress field in surrounding rock is simulated by ANSYS.The variations of temperature field and stress field with time are studied.The results of numerical simulation show that plastic zone in surrounding rock is extended remarkably and plastic deformation increase obviously under thermal loads.The extension of plastic zone in surrounding rock is different with different cooling courses.The influence of temperature variation on roadways stability is more adverse when roadways ventilation start in winter.

关键词： Deep mining Roadways stability Coupled thermal-stress analysis

作者: Li Tiezeng Tan Yunliang Cheng Guoqiang

作者单位: Key Laboratory of Mine Disaster Prevention and Control,Shandong University of Science and Technology Key Laboratory of Mine Disaster Prevention and Control,Shandong University of Science and Technology

会议类型: 国际会议

会议名称: The 2007 International Conference on Mine Hazards Prevention and Control(2007矿山灾害预防与控制国际学术会议)

会议地点: 青岛

会议语种:英文

页码: 287-291

在线出版日期: 2007-10-17（万方平台首次上网日期，不代表论文的发表时间）