China University of Mining and Technology (CUMT) - Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process, affiliation not provided to SSRN, Hefei University of Technology, East China University of Technology, affiliation not provided to SSRN, China University of Mining and Technology (CUMT) - Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process, China University of Mining and Technology (CUMT) - Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process and affiliation not provided to SSRN