Research On Evaluation Model And Application Of Variable Fuzzy In Urban Flood Safety

In our country, the loss caused by the flood is very great and the flood is one of the worst natural disasters of main natural disasters in china, so prevention and control work became the most important natural disasters over content. While the city disaster flooding is the key. With the rapid development of urbanization, the population and the social wealth highly gathered so once the floods happen in the city, causing casualties and economic loss also increase exponentially. Therefore, establishing effective urban flood safety evaluation model to check every Chinese urban flood control state could find the weak link of city flood control and guide the further construction of flood control system.Although our country's flood control system of the research history of evaluation is very brief, but flood control system comprehensive evaluation theory and method of research has made significant progress, however, has the research results of the urban flood limitations in the category of city flood control engineering measures, among the urban flood non-engineering measures without will improve enough to the important position. This paper using the goal analytic hierarchy process, constructing urban flood safety evaluation index system, the application binary comparison determines the index weight, using variable fuzzy set theory, establish urban flood safety variable fuzzy evaluation model. Heze city flood control system in shandong province as an example, the safety evaluation establish heze flood safety evaluation index system, application in urban flood safety variable fuzzy evaluation model, income evaluation conclusion accord with the actual situation of heze city. Application examples urban flood safety variable fuzzy model can reflect the true, accurate, and points out that the urban flood safety of flood control weaknesses, and guidance of city flood control system construction and development.