1. State Key Laboratory of Coal Mine Safety Technology, China Coal Technology & Engineering Group Shenyang Research Institute, Shenfu Demonstration Zone, Shenyang 113122, China
2. Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, School of Resources and Civil Engineering and Key Laboratory of Liaoning Province on Deep Engineering and Intelligent Technology, Northeastern University, Shenyang 110819, China
3. Research Institute of Petroleum Exploration & Development, PetroChina Company Limited, Beijing 100084, China
4. National Energy shale gas R&D (experiment) center, Langfang 065007, Hebei, China