1. Associate Professor, School of Architecture and Civil Engineering, Xi’an Univ. of Science and Technology, No.58 Yanta Rd(N) Mid-Section., Xi’an 710054, P. R. China (corresponding author).
2. Ph.D. Candidate, School of Architecture and Civil Engineering, Xi’an Univ. of Science and Technology, No.58 Yanta Rd(N) Mid-Section., Xi’an 710054, P. R. China.
3. Postgraduate, Engineering Geological Research Institute, Xi’an Research Institute, China Coal Technology and Engineering Group Corp., Xi’an 710077, P. R. China.