Abstract
Slope stabilization is one of the most crucial tasks in rock-fill reservoir dam projects to prevention of erosion and destruction of upstream and downstream slopes. Inappropriate choice and design of the protection can cause irreparable damages imposing additional costs and time to the project. In this paper, the body slope ranking is conducted by using the classical and fuzzy multi-criteria decision making approaches specifically VIKOR and Fuzzy-TOPSIS methods. To this aim, eight important and effective criteria were considered to select the most appropriate cover among five most common ones for protecting and conserving body slope of the rock-fill dams. The study was conducted on a dam in Bijar city located in the province of Guilan, the north of Iran. According to results of a comparative analysis using fuzzy and classical MCDM techniques, the concrete facing cover and the soil-cement cover have placed at the highest and lowest ranks to protect the body of the dam, respectively, suggested by both employed methods.
Highlights
The global water crisis and management of water resources have accelerated the requirement for the construction of dams; in recent decades, the constructions of dams in the world and especially in Iran are in a special position
Selection of the suitable method of dam slope stabilization is considered as a multi-criteria decision making problem
The results demonstrated that the numerical modeling can be applied as a powerful tool for modeling slope stability [8]
Summary
The global water crisis and management of water resources have accelerated the requirement for the construction of dams; in recent decades, the constructions of dams in the world and especially in Iran are in a special position. Most of the times there is probability of failures and defects because of uncertainty in implementation and collection of data and lack of consideration in many other parameters These issues can lead to failure in the phase of selecting the type of cover for the stability and design; one of the designers’ activities is preparing and gathering all data related to economic issues and performance optimization according to time condition and project necessity. A research was conducted by Ahangari et al (2010) in order to identify effective and impressive criteria They considered several criteria in order to analyze stabilization methods in the phase of decision making including technical, managerial, financial, environmental, and socio-cultural considerations [6]. The results obtained showed the ANFIS-SCM model is a reliable system modeling technique for prediction of slope stability [9]
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