Research on landslide risk assessment of mountainous highways

• 1、School of Civil Engineering,Chongqing University

Abstract：By analyzing the historical landslide disaster data of a mountainous area along the Yangtze River expressway, a comprehensive landslide risk assessment framework based on landslide susceptibility hazard and expressway vulnerability is proposed, and a landslide risk assessment model for mountainous expressway is constructed. Based on the dataset of riverside expressways, two independent evaluations were conducted on the susceptibility danger and vulnerability of expressways to landslides. The constructed model was used to assess the risk of expressways. The results showed that recently, extremely low-risk roads accounted for 43.56% of the total length, low-risk roads accounted for 35.97%, medium risk roads accounted for 19.87%, and high-risk roads accounted for 0.60%. There were no extremely high-risk roads. The research results can provide ideas for comprehensive evaluation of landslide risResearch on landslide risk assessment of mountainous highwaysk, reference for mitigating or reducing landslide risk on mountainous highways, and scientific basis for risk management.

Keywords： Geological disasters；Highway landslide susceptibility-danger Highway vulnerability Risk assessment Machine learning Combination weighting method