1. School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
2. National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, No. 6 Kecheng Road, Jiulongpo
District, Chongqing 400037, China
3. China Coal Technology Engineering Group, Chongqing Research Institute, No. 6 Kecheng Road, Jiulongpo District, Chongqing 400037, China
4. Huaneng Coal Technology Research Co., Ltd., Beijing 100070, China
5. Bailongshan Coal Mine of Huaneng Diandong Energy Company, Qujing 655580, Yunnan, China
6. College of Safety Science and Engineering, Xian University of Science and Technology, Xian 710054, Shanxi, China
7. Hunan Coal Science Research Institute Co., Ltd., Changsha 410021, Hunan, China