Revival Mechanism and Prevention Measures of Composite Landslides: A Case Study of the Wenma Expressway Composite Landslide

The resurrection of landslides often occurs in complex strata, where there are multiple water-resisting zones and weak interlayers. groundwater level has a significant influence on landslide stability can lead to the formation composite increase probability resurrection. In field investigation K39 +400 Wenma Expressway, deformation characteristics surface were obtained by analyzing 34 cracks surface. deep analyzed studying data from borehole monitoring. zone assessed integrating area. resurrections shallow Area I III due mainly long-term high underground water landslide. was calculated under various depths drainage tunnel, results showed that slope critical condition when depth tunnel 15 m; basically stable 20 m 25 m. When reached more than 30 m, state. Groundwater found be main factor affecting deformation. This case study shows importance zoning landslides, important