Study Urban Geological Data Integration And Sharing Technology

With changes in residents’ lives and urban economy,Urban geological data massive accumulate,and plays an increasingly important role in the development of the growth of the number of cities and population size.With more and more urban geological data has presented,it is a great difficulty that how to effectively store,manage,visualize and share these massive data.Computer,GIS and other technologies can play a greater practical role in the field of urban geology.There are many defects in the traditional urban geological data platform,and there are great limitations in the scalability and flexibility of the data.It needs new research technologies to improve the performance requirements of the urban geological data platform.This paper studies from the aspects of urban geological data integration and urban geological data sharing,the technology of Postgre SQL,Postgis,Mongo DB,Geo Server,Java and Open Layers are used to realize the storage management,visualization and sharing service of urban geological data.mainly includes the following aspects of works:(1)Characteristic analysis of urban geological data.The urban geological data is divided according to different topics,different data formats,and different specifications,and the corresponding characteristics are studied.(2)Integration of urban geological data.Based on the special topics of urban geological data,the integration method and integration process are specifically designed.The combination of Postgis and Mongo DB databases is used as the integration platform.Combining the characteristics of data structures included in geological disasters,engineering surveys,mineral exploration,and hydrogeology.The data in the format uses different integration methods to achieve the integration of urban geological data and design the urban geological database.(3)Sharing of urban geological data.from the sharing requirements of the urban geological data platform,analyzing the sharing method and sharing mechanism.The platform interface design calls Web Services API,Java Script API,Client API,map API,etc to achieve the sharing requirements.The platform interface is sent by HTTPGET/POST and passed by the URL QUERY＿STRING,the call flow of the interface is realized by the connection between the application system,CA certification,platform certification,application interface,and platform service engine.(4)Implementation of urban geological integration and sharing management platform.In order to meet the integration and sharing service of urban geological data platform,combining open source GIS technology and computer technology,the urban geological data architecture and functional modules are designed,and the urban geological integration and sharing management platform prototype system is constructed to realize the integration of data integration and sharing service.