در اولويت بندي زيرحوزه ها به منظور كنترل سازه اي MCDM كاربرد روش

The Use of MDCM Method in Prioritizing Sub-Watersheds Structural Flood Control

In recent years, flood control projects have been widely applied throughout the country. An important aspect in these projects is a great volume of labor and therefore trends cost involved. Prioritizing the sub-watersheds is practically performed traditionally. The goal of this research is to propose a mathematical method to prioritize and select a better choice. Overall, in these issues, we can use different multicriteria decision making (MCDM) method. Most MCDM methods automatically line up the selections and provide the result without incorporating the decision-maker. Among those, the utility additive (UTA) method with greater flexibility was considered in this study since it gives a greater importance to decision maker. The UTA method constantly asks for selection of the decision-maker through some steps using piecewise linear programming. In this study, 49 sub-watersheds of the Kan River in Northwest of Tehran were evaluated according to 50 years return period of flood, lag time, and fatal-cost damage. The results show that despite the multi-component goal, the K3 (Keshar) sub-basin is number one with regard to practicality. This method can effectively be used in these projects to reduce the high cost in low priority sub-basin.