作者单位:YAO Jing-ming,CAO Shu-gang,GU Yi-lei(Key Laboratory for the Exploitation of Southwestern Resources & the Environmental Disaster Control Engineering Ministry of Education, Chongqing University,Chongqing 400044, China; College of resource and environmental Sciences, Chongqing University, Chongqing 400030, China)姚精明,曹树刚,顾义磊(重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400044;重庆大学资源及环境科学学院,重庆400044)