作者单位:WANG Kai,REN Yun-qiang(School of Resources and Safety Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)王凯,任运强(中国矿业大学(北京)资源与安全工程学院,北京100083)ZHAI Mao-bing(Wajinwan Coal Industry Co.,Ltd.,Datong Coal Mine Group,Datong 037000,China)翟茂兵(大同煤矿集团挖金湾煤业有限公司,山西 大同037000)