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http://dx.doi.org/10.12652/Ksce.2011.31.5B.415

Development of Flood Control Effect Index by Using Fuzzy Set Theory  

Kim, Juuk ((주)데이타피씨에스)
Choi, Changwon (아주대학교 건설교통공학과)
Yi, Jaeeung (아주대학교 환경건설교통공학부)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.31, no.5B, 2011 , pp. 415-429 More about this Journal
Abstract
Quantitative evaluation indexes for flood control effect of a multi-purpose reservoir used widely in Korea are the discharge control rate, reservoir release rate, reservoir storage rate, and flood control storage utilization rate. Because these indexes usually use and compare inflow, release, and storage data directly, the uncertainties included in these data are not considered in evaluation process, and the downstream flood control effects are not assessed properly. Also, since the acceptable partial failure in a design of water resources system is not considered, the development of a new flood control effect evaluation index is required. Fuzzy set theory is therefore applied to the development of the index in order to consider the data uncertainty, the downstream flood control effect, and the acceptable partial failure. In this study, the flood control effect of a multi-purpose reservoir is evaluated using the flood control effect index developed by applying fuzzy set theory. The Chungju reservoir basin was selected as a study basin and the storm events of July, 2006 are used to study the applicability of the developed index. The related factors for flood control effect are fuzzified, the acceptable failure region is divided from the system state to evaluate the flood control effect using developed flood control effect index. The flood control effect index were calculated by applying to the study basin and storm events. The results show that the developed index can represent the flood control effect of a reservoir more realistically and objectively than the existing index.
Keywords
flood control effect index; fuzzy set theory; acceptable partial failure; combine reliability-vulnerability index;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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