Numerical Investigation on Outburst Mechanism of Gassy Coal

摘要：

　　In this paper, a gas pressure coupled code, Rock Failure Process Analysis (RFPA2D), was adopted for numerical simulation of cross-cut coal uncovering in gassy coal seams and the outburst process induced by mining in coal seams containing gas pockets.The simulation results reproduced the entire outburst process from crack initiation, propagation, coalescence until outburst of coal.The integrated effects of geo-stresses, gas pressure and mechanical properties of coal on occurrence of coal outburst were illustrated by the deformation of gassy coal and the stress evolution during the failure process.

关键词： gassy coal cross-cut outburst numerical simulation deformation and failure

作者: Tang Chun-an Xu Tao

作者单位: Center for Rock Instability and Seismicity Research, Dalian University of Technology, Dalian 116024, Center for Material Failure Modeling Research, Dalian University, Dalian 116622, PR China

会议类型: 国内会议

会议名称: 2010中国煤矿瓦斯治理国际研讨会

会议地点: 合肥

会议语种:英文

页码: 144-153

在线出版日期: 2010-05-29（万方平台首次上网日期，不代表论文的发表时间）