The failure characters of fine-grained sliding zone due to water

Landslide is the most dangerous geohazards in the world and have the greatest impact on the bio-environment. In the process of landslide evolution, the evolution of the slip zone plays a controlling role in the formation of landslide, and the formation of the slip zone often has the characteristics of progressive failure. In order to elucidate the evolution of minerals and elements in the water-affected slip zone and their influence on the physical and mechanical properties of the slip zone, the sliding characteristics and formation process of the Shanyang landslide under the action of the slip zone were obtained through field investigation, laboratory experiments and numerical simulation. Firstly, the long-term evolution and mineral migration evolution characteristics of the slip zone under the action of water were studied by obtaining soil samples at different positions of the landslide slip zone, and secondly, the strength characteristics of the soil in the slip zone under saturated and natural water content were analyzed by ring shear experiments, and the influence of shear rate on the shear strength of the slip zone was studied, and the formation of the slip zone and the instability process of the landslide were analyzed by creep experiments. The study of its evolution in the water-affected landslide is of good guiding significance for understanding the formation process of the landslide.