1. Mining College Guizhou University Guiyang 550025 China
2. Engineering Center for Safe Mining Technology Under Complex Geologic Condition Guiyang 550025 China
3. Institute of Gas Disaster Prevention and Coalbed Methane Development Guizhou University Guiyang 550025 China
4. Guizhou Panjiang Coal Power Group Technology Research Institute Co. Ltd. Guiyang 550025 China
5. Songming Branch of Kunming Ecological Environment Bureau Kunming 651799 China
6. Zoomlion Earthmoving Machinery Co. Changsha 410000 China