1. Professor, Dept. of Geology Engineering, College of the Geology Engineering and Geomatics, Chang'an Univ., Xi'an 710054, China; Key Laboratory of Western China's Mineral Resources and Geology Engineering, Education Ministry of China, Xi'an 710054, China (corresponding author).
2. Ph.D. Student, Institute of Geomechanics, Chinese Academy of Geological Science, Beijing 100081, China.
3. Ph.D. Student, Dept. of Geology Engineering, College of the Geology Engineering and Geomatics, Chang'an Univ., Xi'an 710054, China.
4. Professor, Dept. of Geology Engineering, College of the Geology Engineering and Geomatics, Chang'an Univ., Xi'an 710054, China; Key Laboratory of Western China's Mineral Resources and Geology Engineering, Education Ministry of China, Xi'an 710054, China.
5. Senior Lecturer, Dept. of Geology Engineering, College of the Geology Engineering and Geomatics, Chang'an Univ., Xi'an 710054, China.