Abstract: For different soil types, there are obvious differences in the formation mechanism, deformation and failure characteristics and development conditions of the rainfall-triggered landslide. At present, the classifications on the rainfall-induced landslides have not been systematically distinguished based on the types of landslide soil. It is of great significance to perform the research on the rainfall-induced landslides in different type of soils. In this paper, the landslide mechanism, failure mode and early warning criterion of different type of soil slopes under the rainfall are summarized in detail. These soils include the unsaturated soil, loess, gravelly soil, expansive soil, and other special soils. The current main landslide problems in these soils are discussed, and the future research needs are proposed. It is concluded that the characteristics of different types of soil landslides under rainfall conditions, the process of rainfall-induced deformation and failure of special soil landslides and the early warning criteria of rainfall-induced different soil landslides need to be further studied. The research finds are of a reference value to the research and minimize the rainfall-triggered landslides.

Key words: Rainfall, Landslide, Formation Mechanism, Failure Modes, Early Warning Criteria, Soil Type