Design And Implementation Of 3D Geological Disaster Information Management System Based On WebGIS

China has a vast territory and frequent geological disasters,which have caused enormous losses to the country and its people.In order to reduce the losses caused by geological disasters and protect the safety of people’s lives and property,it is necessary to collect various types of disaster information and establish a scientific and efficient geological disaster information management platform for comprehensive analysis and application.With the continuous development of technologies such as big data,visualization,and GIS,the scope and functions of traditional geological disaster information management systems are gradually changing,and system interactivity,scalability,and security have been improved.Therefore,establishing a new generation of geological disaster information management system by comprehensively using current mainstream technologies has become the top priority of geological disaster prevention and control.In this paper,first,Huanggang City is selected as the research area,and on the basis of studying the application status of Web GIS in the geological disaster information management system,a scientific and reasonable analysis of the system construction is conducted;Relying on the open source GIS platform,developing using languages such as CSS,Java Script,and Java,realizing map visualization based on Openlayers and Cesium,and using Postgre SQL to achieve data storage and management;Finally,taking Huanggang City Geological Disaster Information Management System as an example,the development and application of the system are realized.The main research results and conclusions of the paper are as follows:(1)Focusing on the Web GIS system development platform,this paper comprehensively compares the advantages and disadvantages of various software for Web GIS system development,and proposes a more flexible and economical solution than traditional Web GIS systems.(2)Based on user demand analysis and system feasibility analysis,the overall design of the system is conducted,and the system design objectives are determined.The system architecture is divided into four levels: user layer,application layer,service and transmission layer,and data layer.(3)The spatial database is designed through conceptual and logical models,and a geological disaster database is built based on the open source database platform Postgre SQL and Post GIS to achieve efficient storage and rapid query of spatial and attribute data.(4)Based on ECharts and Cesium technologies,the key technologies in system development are studied,and the functional modules of the system are designed around users.Finally,a three-dimensional geological disaster information management system integrating visualization and data management is built.