[1] Hunan Univ Sci & Technol, Work Safety Key Lab Prevent & Control Gas & Roof, Hunan Prov Key Lab Safe Min Tech Coal Mines, Xiangtan 411201, Peoples R China
[2] Hunan Univ Sci & Technol, Sch Resources Environm & Safety Engn, Xiangtan 411201, Peoples R China
[3] Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China