[1] China Univ Min & Technol, Sch Mines, Key Lab Deep Coal Resource Min, Minist Educ, Xuzhou 221008, Jiangsu, Peoples R China
[2] Penn State Univ, EMS Energy Inst, Ctr & Energy & Mineral Engn G3, University Pk, PA 16802 USA
[3] China Univ Min & Technol, Key Lab CBM Resources & Reservoir Format Proc, Minist Educ, Xuzhou 221008, Jiangsu, Peoples R China
[4] Henan Polytech Univ, Sch Energy Sci & Engn, Jiaozuo 454003, Henan, Peoples R China
[5] China Univ Min & Technol, Sch Mines, Room A601,1 Daxue Rd, Xuzhou 221116, Jiangsu Provinc, Peoples R China