1. Associate Professor, Hunan Engineering Research Central for Advanced Technology and Intelligent Equipment for Underground Space Development, Hunan Univ., Changsha 410082, PR China.
2. Graduate Student, College of Civil Engineering, Hunan Univ., Changsha 410082, PR China (corresponding author).
3. Professor, College of Civil Engineering, Hunan Engineering Research Central for Advanced Technology and Intelligent Equipment for Underground Space Development, Hunan Univ., Changsha 410082, PR China.
4. Professor, Hunan Engineering Research Central for Advanced Technology and Intelligent Equipment for Underground Space Development, Hunan Univ., Changsha 410082, PR China.
5. Associate Professor, Dept. of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO 80401. ORCID: .