1. Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology, D11 Xueyuan Rd., Haidian District, Beijing 100083, China (Corresponding author), e-mail: zhaoyx@cumtb.edu.cn
2. School of Energy & Mining Engineering, China University of Mining and Technology, D11 Xueyuan Rd., Haidian District, Beijing 100083, China, https://orcid.org/0000-0002-2700-6395 (Z.T.)
3. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, D11 Xueyuan Rd., Haidian District, Beijing 100083, China
4. Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology, D11 Xueyuan Rd., Haidian District, Beijing 100083, China