[1]Department of Mining Engineering, West VirginiaUniversity, Morgantown, WV, USA [2]College of Safety Engineering, China University of MiningTechnology, Xuzhou, Jiangsu, China;
[1]Department of Mining Engineering, West VirginiaUniversity, Morgantown, WV, USA [2]College of Safety Engineering, China University of MiningTechnology, Xuzhou, Jiangsu, China;
[1]Department of Mining Engineering, West VirginiaUniversity, Morgantown, WV, USA [2]College of Safety Engineering, China University of MiningTechnology, Xuzhou, Jiangsu, China;