模糊层次分析法在雨洪管理措施决策中的应用研究.pdfVIP

ABSTRACT With the acceleration of urbanization, sharp rise of urban imperviousness appears and leads to significant changes in the natural hydrological cycle. At the same time stormwater peak flow increases, and combined sewer system overflows frequently, which threatens human lives and public property. A lot of facts show that traditional stormwater management mode has turned out to be unable to ensure the normal operation of the drainage system. It ’s urgent to introduce stormwater management concept home and abroad. Given that there are a great number of stormwater management practices and numerous complex factors involved in the decision-making process, it’s to introduce fuzzy Analytic Hierarchy Process to make strategic decision for best stormwater management practices. Firstly, this paper analyzed and characterized the structures, features, functions, maintenance and management requirement, and constraints of typical stormwater management practices in detail. Stormwater management practices assessment system was constructed with the criteria about site suitability, performance evaluation, cost and maintenance requirement, so as to facilitate analysis of various factors affecting decision-making. The assessment system can provide preliminary reference and foundation for stormwater management practice comparison. Then, fuzzy Analytic Hierarchy Process was introduced based on combinations of fuzzy multiple attribute decision and core idea of Analytic Hierarchy Process. Fuzzy consistency judgment matrix was established to overcome drawbacks of traditional method. Accurate quantitative description and consistency was guaranteed. Then, detailed decision-making steps were elaborated for dec