1. College of Geological Engineering and Geomatics, Chang’an University, Xi’an, China
2. Observation and Research Station of Ground Fissure and Land Subsidence, Ministry of Natural Resources, Xi’an, China
3. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (SKLGP), Chengdu University of Technology, Chengdu, China
4. Key Laboratory of Earth Fissures Geological Disaster, Ministry of Natural Resources, Nanjing, China