Study On Geological Hazard Susceptibility Evaluation Base On GIS In Shaoxing City

In this paper,the research methods and development status of geological hazardprone zoning are studied,compared with domestic and foreign research methods,a series of studies on geological hazards in Shaoxing City are carried out,and finally the degree of geological hazard proneness is determined by the geological hazard prone risk index.Quantify,get the geological disaster-prone zoning map of Shaoxing City.The article is mainly composed of five parts.The first part explains the problems that still exist in the prevention and management of geological disasters in our country.On this basis,it introduces the importance and necessity of geological disaster-prone zoning,and then combines relevant domestic and foreign researches.The status quo and development trend put forward the research goal and technical route of this article.The second part mainly talks about the delimitation of the research area of Shaoxing City as the research area,and introduces the regional overview of the research area in three aspects: physical geography,social economy,and regional geological conditions.Next,it introduces the rich and practical functions of Arc GIS geographic information system software,and uses Arc GIS to generate a database with the existing geological hazard data in the study area.The third part mainly introduces the current situation and development trend of geological disasters in the study area,and uses this as a basis to classify and screen the factors that cause geological disasters in the study area,select the more important factors,and generate a database with Arc GIS geographic information system software.Combining the data of the existing hidden danger points of geological disasters,further analyze their respective impacts on the geological disasters in the study area.The fourth part analyzes the selected factors and determines the weight of each factor's impact on geological disasters,which is used as the index system studied in this article.Then,the evaluation system will be constructed by assigning values to different dimensions.The values are unified,and finally the distribution of the risk index of geological hazards in the study area is calculated by the objective function method.By grading the prone risk index,the research is divided into four levels of high,medium,low,and low proneness.The fifth and sixth parts put forward management recommendations for different levels of prone areas in combination with actual conditions and policies,and introduced the division of geological disaster risk prevention areas and prevention areas.Finally,combined with the problems encountered in the research and some ideas generated,some prospects for future research are put forward.This paper analyzes the occurrence of geological disasters in the study area.Through comprehensive research on current domestic and foreign research,combined with Arc GIS to establish a database,a geological hazard susceptibility assessment system suitable for Shaoxing City is constructed,and the risk of geological hazards is finally obtained.The distribution of zoning maps provides theoretical basis for the study of geological disaster planning during the 14 th Five-Year Plan of Shaoxing City...