| The number of geological disasters in Jingyang County is relatively small,but the degree of concentration is high,while the previous geological disaster susceptibility zoning methods are mostly based on the statistical analysis of a large number of geological disasters.This feature of Jingyang County geological disasters is also geology.The disaster susceptibility evaluation puts forward new requirements.This article relies on the "Surface Investigation of Disasters in Jingyang County" project to study the geological disaster susceptibility zoning evaluation method in Jingyang County.Firstly,on the basis of field surveys and indoor data compilation,the types,distribution rules,formation conditions,and influencing factors of regional geological disasters were analyzed in detail.Based on previous research experience,evaluation factors suitable for the evaluation of geological disasters in Jingyang County were summarized.Then,the geological disaster assessment model was analyzed and the geological disaster models were divided into three categories:empirical semi-empirical models,mathematical statistics models,and other models.For the three types of evaluation models,the information method,the information weight method,and the fractal theory were selected.The representative evaluation method is to conduct the susceptibility evaluation of the geological disasters in the Jingyang County under the GIS platform,and the geology disaster susceptibility maps of the Jingyang County using different evaluation methods are obtained.The assessment results of the evaluation methods are compared and analyzed,and the results are suitable for the Jingyang County.Evaluation method of geological disaster susceptibility zoning evaluation.The following results were obtained in this study:(1)Using MAPGIS as a tool to compile maps,detailed analysis of the formation conditions and influencing factors of geological disasters in Jingyang County,and summarizing the evaluation factors in this study:slope,aspect,slope type,landform,structure,rivers(Jing River)Formations,surface water(irrigation channels),mining,rainfall.(2)Through analysis of various evaluation methods,we selected three representative evaluation methods:information volume method,information weight method,and fractal theory.Under the GIS platform,the geological disasters in Jingyang County were evaluated for susceptibility to zoning.(3)Through analysis and comparison of the results of the three district evaluations,the mathematical statistics method that introduces expert experience similar to the information-rights method in the geological disaster susceptibility evaluation method is stronger in the Jingyang County where the number of disaster points is less concentrated.applicability. |
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