다기준의사결정기법을 이용한 안동다목적댐의수문학적 안정성 증대방안 결정

Abstract

Due to recent heavy storms in Korea, the amount of PMP is increased than when most reservoirs were originally designed. Also, since the design flow for multi-purpose reservoir has been strengthened to PMF, the stability of dam for PMF is required. Though it is necessary to analyze as many stability increase alternatives and criteria as possible, it is not easy to analyze them with the present available simulation or optimization techniques. Therefore, this research introduces the method of selecting the most suitable alternative by applying a number of multi-criteria decision analysis techniques to the decision making process of increasing the flood control capability for multi-purpose dam. Seven techniques including the weighted average, ELECTRE IㆍII, PROMETHEE IㆍII, compromise programming, AHP are applied to Andong multi-purpose dam to support decision makers for selecting the most suitable alternative. Eight structural and nonstructural alternatives are evaluated by seven criteria, and the best alternative is provided. The alternative of extending the existing spillway is selected as the best alternative for Andong dam in this study. It is expected that the multi-criteria decision analysis can be applied to many water related areas in addition to determining the hydrologic stability increase alternative which often need to select the best one from many alternatives.