Study on Mechanics and Domino Effect of Large-scale Goaf Cave-in

摘要：

A large area of continuous solid shallow-buried goaf group created by open-stope method, under the influence of space-time effects exerted by slow creep of the pillar-roof system, will wholly collapse driven by partly instability of pillar and roof collapse until the whole mine collapses, showing a domino effect. The dynamic process is ignored in the traditional analysis of mechanical stability. Based on analysis for the domino effect and disaster-relief mechanism in the mining goaf, the mechanical method combined with Voronoi graph method has been adopted to establish the dynamic analysis on the pillar- roof system stability. It seems more in line with the actual situations, and can help to more accurately predict the time and location of disaster. The conclusion is of great value on study of rock mechanics and mining companies safety production.

关键词： goaf stability Domino effect Voronoi polygon

作者: Ma Haitao Wang Jinan Wang Yunhai

作者单位: China Academy of Safety Science & Technology, Beijing 100029, China University of Science & Technolo University of Science & Technology Beijing, Beijing 100083, China China Academy of Safety Science & Technology, Beijing 100029, 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: 1386-1395

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）