[1] School of Mechanic & Civil Engineering, China University of Mining & Technology(Beijing), Beijing,100083, China
[2] State Key Laboratory of Groundwater Protection and Utilization by Coal Mining, National Energy Group, Beijing,102209, China
[3] National Institute of Low Carbon and Clean Energy, Beijing,102211, China
[4] Lingxin Coal Mine, Ningxia Coal Industry Company, China Energy Group, Lingwu,751410, China