Reliability in dams and the effects of spillway dimensions on risk levels |
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Authors: | Kasim Yenigun Cevat Erkek |
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Affiliation: | (1) Department of Civil Engineering, Faculty of Engineering, Harran University, Osmanbey Campus, Şanliurfa, Turkey;(2) Department of Civil Engineering, Faculty of Civil Engineering, Istanbul Technical University, Ayazağa Campus, Istanbul, Turkey |
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Abstract: | A general approach is presented for risk engineering and identification of the risk benefits analysis, goals and limits for
risk evaluation in certain applications by considering the first-degree secondary moment methods. A computer program is developed
in the Java language (DAM_RISK) with the aim to determine the safety levels of spillways in existing dams (or dams in the
planning or construction phase). In consideration of a possible risk, observed overflow values are used, with the purpose
of the rehabilitation values that need to be known, thus producing data ready for technical and financial analysis. This program
is used to perform risk analysis for the Kürtün and Oymapi nar dams in Turkey with the purpose dam rehabilitation at risk.
Different spillway dimension and the change in risk for the reservoir damping factors are also presented. The most important
conclusion for planners and risk evaluators is the graph that shows the riskless region in spillway dimensions. Various features
of the computer program and areas in which it might be further developed are considered in detail. The results of the applications
carried out are given in terms of risk evaluations. |
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Keywords: | Safety of dams Risks of dams Rehabilitation of spillways |
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