1. Ph.D. Student, College of Geological Engineering and Geomatics, Chang’an Univ., Xi’an 710054, Shaanxi, China.
2. Professor, College of Geological Engineering and Geomatics, Chang’an Univ., Xi’an 710054, Shaanxi, China (corresponding author).
3. Professor, School of Water and Environment, Chang’an Univ., Xi’an 710054, Shaanxi, China.
4. Master’s Student, College of Geological Engineering and Geomatics, Chang’an Univ., Xi’an 710054, Shaanxi, China.