1. Key Laboratory of Deep Underground Science and Engineering (Ministry of Education), College of Architecture and Environment, Sichuan University, Chengdu 610065, China
2. Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610065, China
3. National and Local Joint Engineering Research Center of Shale Gas Exploration and Development (Chongqing Institute of Geology and Mineral Resources), Chongqing 401120, China
4. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China