Optimum Design of Levees by Risk Analysis Method (Case Study : Khoshk River of Shiraz)

Document Type : Research Paper

Authors

Abstract

 This paper has paid to review one of the structural flood control methods (levees). In order to speed up the design of levees, an optimization method has been proposed in this paper which can be a good alternative for the usual design methods. The advantage of using optimization method is that one can reach the optimal option by solving model for one time (or several times for further analysis) and there is no need to review various single options. Benefit-cost analysis has been used to optimize the dimensions of levee containing height of it and it's distance from the river bank. Obtained optimization model is a non-linear one that has been solved by LINGO 12 software. In this study, proposed system of flood control in dry Maali Abad river (TangeSorkh) of Shiraz has been studied. According to this studies and the execution of model, 20-year return period flood had the highest annual net benefit and was selected as the design flood. The obtained values for the height of levee and it's setback are respectively 1.7 and 6.1 meters.

Keywords


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