Influence of a Landslide on a Tunnel in Loess-Bedrock Ground

By combining model testing and numerical simulation, this paper focuses on the influence of landslides tunnels in loess-bedrock strata by using perfect landslide–tunnel system (LTS). A mechanical test simulation (MTS) was used to provide thrust for loading unloading trailing edge slope. Particle Image Velocimetry (PIV) 32 cluster strain gauges were adopted monitor deformation tunnel structure landslide soil, sliding surface, respectively. means a characteristics crossing are comprehensively described. The cyclic load behavior displacement surface is discussed detail. experimental results show that required first largest, during multiple unloading. With increase time, gradually decreases eventually remains stable. presents progressive failure mode. There stress concentration upper part tunnel, which causes secondary phenomenon. mainly occurs soil tunnel. direction consistent with direction, above When disturbed an external force, deforms downward, and, when unloaded, has small rebound deformation. However, loading–unloading times, decreases, permanent accumulates until fails. research can reference construction protection engineering loess regions, have value control landslides.