The Research Of Urban-disasters Composite Risk Assessment Data Management

City is a high efficiency organization body, along with the development of city urbanization, population, resource, economy makes towards intensive evolution, in this process, but also makes our city in response to sudden natural disasters, accidents disasters, public health events, social security incidents and each derivative and the coupling event into a fragile body, often causing serious damage. While the data is a frontier field of disaster risk assessment studies, accurate and comprehensive data information is important to improve the reliability of the risk assessment index, therefore, technology and management method of comprehensive risk assessment data integration of massive city is a very meaningful thing.In this thesis, the research content is the "Twelfth Five Year Plan" technology support project "city vulnerability analysis and comprehensive risk assessment technology and system research and development" project of. This paper thoroughly analyzes the construction in the city comprehensive risk database based on data requirements, the use of advanced design concepts and technology, completed the design and database logical design industry overall framework of comprehensive risk assessment database ideas of city space based on data warehouse, proposed the construction with comprehensive risk pool city design ideas, pools comprehensive database, history database and research library, finally completed the construction of city comprehensive risk assessment database. Considering the dynamic development and change of the city, in order to better dynamic updating and management of comprehensive risk pool city, combining multi-source spatial data integration technology, technology, spatial data warehouse based on automatic processing technology, production rule base vector data increment updating technology, historical data archiving technology and network data collection processing and editing tool, using object-oriented programming technology, has developed a comprehensive risk data of urban integration and management system of data input, data edit, automatic checking, data synchronization, data acquisition, the summary output, history data management and system management functions, can be integrated on the risk of urban multi-source heterogeneous access to the comprehensive assessment of data cleaning, organization and management.Finally, in the comprehensive risk assessment of urban infrastructure development, this research combined with the present situation of urban fundamental geographic data resources and related thematic data resources, the choice of Beijing City, Haidian District as a typical city, will Haidian District existing all kinds of data collection, and the data were pooled results of data cleaning, the quality inspection and synchronous management according to the requirement of standard by the system software research and development of the.In the end, through the research, this paper obtained the following results:(1) First proposed to build the comprehensive risk assessment of urban comprehensive database concept, at the same time idea of space based on data warehouse, and completed the design of integrated risk assessment data and the construction work of urban.(2) The design of comprehensive risk evaluation in urban renewal strategy database, study the method of a comprehensive risk assessment data integrated management of the city.(3) The design and development of the urban comprehensive risk assessment data integrated management system software.The establishment of data calculation and analysis software model lays a foundation for the final data of the research results of urban comprehensive risk assessment, and laid a foundation for further study of the data of integrated risk assessment of cities.