1. Doctoral Candidate, Highway School, Chang’an Univ., Xi’an, Shaanxi 710064, China.
2. Associate Professor, Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region Ministry of Education, Chang’an Univ., Xi’an, Shaanxi 710064, China (corresponding author).
3. Professor, Key Laboratory of Road Structure and Material Ministry of Transport, Chang’an Univ., Xi’an, Shaanxi 710064, China.
4. Master’s Candidate, Highway School, Chang’an Univ., Xi’an, Shaanxi 710064, China.