Triggering Mechanism and Mitigation Strategies of Freeze-Thaw Landslides for Engineering in Cold Regions: A Review

With the accelerated development of the engineering constructed in the frozen soil regions, the freeze-thaw landslides have caused huge financial repercussions, irreversible damage to the fragile environment and severely delay engineering progress. Due to the complicated failure mechanism and various triggering factors, the study of free-thaw landslides merits our great attention. This paper presents a review on engineering geological analysis of freeze-thaw landslide. The instability features of freeze-thaw landslide of freeze-thaw cycle effect and freezing-stagnating-slipping effect are discussed. Three main controlling factors affecting the stability of freeze-thaw landslides including global warming, earthquake and anthropogenic factors are investigated. Furthermore, the methods for freeze-thaw landslide prevention and mitigation are reviewed and discussed. This paper may have great value for landslide prevention in cold regions, and meet the urgent requirement of engineering constructions.