Risk assessment of high-level collapse and landslide disasters in typical basin-edge mountainous areas in northeast Chongqing: A case study of the Ningqiao area in Wuxi

Abstract

The study area is located in Xiabao Town, Wuxi County, Chongqing City. It belongs to the mountainous area on the edge of the Yudong Basin. It has strong topography, complex geological environment and frequent geological disasters. In order to study the development and distribution of geological hazards and risk zoning in high and steep canyons, this paper selects factors such as elevation, slope, aspect, engineering geological rock group, distance from water system, and distance from folds as the influencing factors for the assessment of geological hazard susceptibility, based on ArcGIS The platform uses the information model to quantitatively evaluate the susceptibility of high-level geological hazards in the high and steep gorge area of Wuxi Ningqiao area. The evaluation model has a high degree of correspondence with the distribution of geological hazards, and the evaluation results have a high degree of credibility. Combined with the vulnerability assessment, the geological disaster risk assessment of the study area was carried out, and finally the geological disaster risk assessment model of the study area was obtained. It provides a scientific basis for the prevention and control of geological disasters in the region, and at the same time has reference significance for the risk assessment of geological disasters and the prevention and control of geological disasters in similar high and steep canyons..

Keywords

• wuxi
• geodisaster
• information model
• risk assessment