Application of infinite slope model in geological hazard risk assessment in county areas： Taking Jinyang County in Sichuan Province as an example

Abstract:

This article takes Jinyang County in Sichuan Province as the research area and explores the application of the infinite slope model in the assessment of geological hazard risk in the county， in response to the demand for regional geological hazard risk assessment. This study used slope units as evaluation units， and based on high-precision terrain data and geological survey data， applies a simplified infiltration model to calculate rainfall infiltration depth and complete model parameter input. With the help of the ARCGIS platform， a county-level geological hazard zoning and evaluation based on the infinite slope model was achieved， and the evaluation results were compared and verified with historical disaster data and INSAR interpretation data. The results indicate that this method is suitable for fine assessment of geological hazard risk at the county level， with reliable evaluation results and strong operability， and can provide scientific basis for regional risk prevention and land planning.