1. School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, People’s Republic of China
2. State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, People’s Republic of China
3. Da Xing’anling Observation and Research Station of Frozen-Ground Engineering and Environment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Jagdaqi, People’s Republic of China
4. School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an, People’s Republic of China