Abstract:
Tongchuan city is a resource-depleted city in China. In recent years, excessive resource exploitation and frequent engineering activities have induced a large number of landslides, which threaten people’s safety and social development, and it is of great research significance to evaluate landslide susceptibility in a scientific and reasonable way. The study area is Wangyi and Yintai, which are the two districts with more landslide distribution in Tongchuan City, and the evaluation index system is constructed by selecting eight factors, including slope, slope direction, elevation, curvature, distance from road, distance from water system, geomorphology type and geotechnical type, etc. The model and platform are combined to construct the evaluation model of landslide susceptibility in the study area, and the susceptibility evaluation is carried out. The evaluation results show that the model value reaches 0.905, with excellent evaluation ability, and the coefficient is 0.76. The evaluation results are in good agreement with the current distribution of landslides; the distance from water system and geomorphological type are the most important environmental impact factors. The high susceptibility and high susceptibility account for 4.36% and 5.77% of the total area, mainly in the central and eastern residential areas of the study area, which is consistent with the field survey results.