Abstract: The Siwan Village Landslide locates on the northwest of Longtan River. The landslide seriously threatens the lives and property of the residents and the safety of pedestrians using the village roads. Based on the analysis of various conditions of the landslide body, the basic characteristics of the landslide, the potential influencing factors, the stability analysis of the landslide body and potential slip zone are discussed in this paper. The results show that the structural surface and cracks on the slope are well developed, and the structure of the soil layer of the slope is in loose state. Under the action of continuous rainfall, it eventually developed into a landslide. The stability analysis shows that the landslide body is in an unstable state under the condition that the rock and soil are saturated by rainfall, which is consistent with the actual situation. The potential slip zone on the right back side of the landslide body is in an unstable state under normal conditions, it is unstable under the condition of saturation and needs further mitigation and monitoring.

Key words: Siwan Village Landslide, Basic Characteristics, Stability Analysis