1. Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing, China
2. Department of Energy and Mineral Engineering, Geosciences, EMS Energy Institute, G3 Center, Pennsylvania State University, University Park, PA, USA
3. State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo, China
4. Department of Geoscience, University of Calgary, Calgary, Canada