An analytical study for design of primary support system around a coal mine intersection
In spite of significant research on coal mine ground control in the world,falls of roof,face and sides still account for most of the fatal and nonfatal injuries in coal mines. Over 70％ of the falls still occur at intersections and this percentage has not changed in the last two decades. Therefore,there is a significant need to analyze and develop primary roof support systems at coal mine intersections. Toward this goal,the authors have performed 3-D finite element modeling studies and have developed a displacement-based analysis approach that is more intuitive and delineates stability and artificial support requirements better than stress-based approach typically used in the past. The two approaches should be used together to understand the stability problems around an intersection. The authors present here the displacement-based approach with analysis of the effects of a few important variables.
mine intersection stability slope curvature and horizontal strain cutter-roof failure
Li Sheng Y.P.Chugh Jinrong Ma John Stankus
Department of Mining and Mineral Resources Engineering,Southern Illinois University Carbondale,Illin Department of Mining and Mineral Resources Engineering,Southern Illinois University Carbondale,Illin Keystone Mining Services,Inc. Pittsburgh,PA,USA
国际会议
北京
英文
597-606
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）