作者单位:LIU Jin-long,XU Shi-bo,FAN Da-chang(Daxing Coal Mine,Tiefa Coal Industry Group,Diaobingshan 112700,China)刘金龙,徐世波,范大昌(铁法煤业集团 大兴煤矿,辽宁 调兵山112700)XIA Yong-jun(National Key Laboratory of Gas Disaster Detecting,Preventing and Emergency Controlling,Chongqing 400037,China; Chongqing Research Institute of China Coal Technology & Engineering Group Corporation,Chongqing 400037,China)夏永军(瓦斯灾害监控与应急技术国家重点实验室,重庆400037;中国煤炭科工集团 重庆研究院,重庆400037)