1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Xiaohongshan 2#, Bayi Rd., Wuhan, Hubei 430071 China
2. University of Chinese Academy of Sciences, 19 Yuquan Rd., Shijingshan District, Beijing 100049, China
3. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Xiaohongshan 8#, Bayi Rd., Wuhan, Hubei 430071, China (Corresponding author), e-mail: william_bai@yeah.net, https://orcid.org/0000-0001-7266-1340