1. Lecturer, School of Science, Xi’an Univ. of Architecture and Technology, Xi’an 710055, China; Lecturer, Shaanxi Key Lab of Geotechnical and Underground Space Engineering, Xi’an 710055, China.
2. Professor, School of Science, Xi’an Univ. of Architecture and Technology, Xi’an 710055, China (corresponding author).
3. Associate Professor, Dept. of Mining and Metallurgical Engineering, Western Australian School of Mines, Curtin Univ., Kalgoorlie 6430, Australia.
4. Lecturer, School of Civil Engineering, Wuhan Univ., Wuhan 430072, China.
5. Ph.D. Candidate, Shaanxi Key Lab of Geotechnical and Underground Space Engineering (XAUAT), Xi’an Univ. of Architecture and Technology, Xi’an 710055, China.