The propagation speed of the cracks in coal body containing gas

摘要：

The destabilization of coal body containing gas that is caused by the quick propagation of the cracks in coal body containing gas and the high pressure gas, which result into coal and gas outburst. Thus, according to the theory of brittleness rupture mechanics the propagation speed calculation formula of the cracks in coal body containing gas is derived under constant stress and the mechanism of the cracks propagation is analyzed. The propagation speed of the cracks in coal body containing gas is calculated by the experimental work. The research results show that gas pressure make the cracks propagation easier, which is consistent with the analysis result of the propagation speed calculation of the cracks. As well as the propagation speed of the cracks increase with the augment of gas pressure.

关键词： coal body gas crack propagation speed

作者: LI Xiangchun WANG Chao ZHAO Caihong YANG Hua

作者单位: School of Resource and Safety Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China State Key Lab of Coal Resources and Safe Mining, Beijing 100083, China

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 1336-1341

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）