1. Postdoctoral Research Associate, College of Civil Engineering, Hunan Univ., Changsha, Hunan 410082, PR China (corresponding author). ORCID: .
2. Professor, State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, PR China.
3. Ph.D. Student, State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, PR China.