1. Institute of Resource & Environment, Henan Polytechnic University, Jiaozuo 454000, China
2. Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Economic Region, Henan Polytecnnic University, Jiaozuo 454000, China
3. State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454000, China
4. Department of Energy and Mineral Engineering, G3 Center and EMS Energy Institute, Pennsylvania State University, University Park, Pennsylvania 16802, United States