A rational quantitative optimal approach to dam safety risk reduction

Cloete, G; Retief, J.V.; Viljoen, Celeste

doi:10.1080/10286608.2016.1138942

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…Su and Wen 32 combined the risk analysis with fuzzy mathematics to evaluate the stability of concrete dams. Cloete et al 33 proposed the rational quantitative optimal approach, which was a robust risk evaluation model to produce a definitive result for the risk mitigation at dam site. Finally, Serrano-Lombillo et al 34 proposed a risk reduction indicator which allows to prioritize the sequences of investments while maintaining an equilibrium between equity and efficiency principles.…”

Section: Introductionmentioning

confidence: 99%

Seismic risk prioritization of a large portfolio of dams: Revisited

Hariri-Ardebili

Nuss²

2018

Advances in Mechanical Engineering

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The development of potential failure mode analysis and risk analysis has greatly improved the state-of-practice for the safety of dams. Risk analysis are well developed in many industries (such as building design, medicine, and insurance) and has greatly advanced in the dams industry over the last 40 years. Engineers and scientists are now deeply investigating and thinking about failure mechanisms associated with operating dams and the probabilities of dam failures. As such, the condition of dams and the risks associated with their operation are now being portrayed better than ever before to dam safety officials and decision-makers. Accurate and adequate risk analyses for a portfolio of dams is extremely important in today’s environment to manage limited budgets and potentially save (or redirect) expensive rehabilitations to identified and critical needs. The goal is to reduce risks of a portfolio of dams in an efficient and cost-effective manner. This article provides a review on risk-based dam terminology and bridging the semi-quantitative and numerical simulation. Moreover, a review of the current state-of-practice for prioritizing a large portfolio of dams subjected to seismic loadings and potential risks is provided. As a potential application, the seismic risk of the 18 dams (which have been experienced relatively large earthquakes) all over the world is evaluated. The semi-quantitative approach is contrasted with finite element model for one of the selected dams.

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Section: Introductionmentioning

confidence: 99%

Seismic risk prioritization of a large portfolio of dams: Revisited

Hariri-Ardebili

Nuss²

2018

Advances in Mechanical Engineering

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“…In general, dam safety management is directly related to the possibility of controlling and monitoring: (i) the current state and age of the construction and (ii) natural and geographical factors in operational planning. In the case of new earth dams (under design) or earth dams in operation, modelling techniques-as a complement to monitoring-open the way to predict their level of safety and risk [16,17].…”

Section: Introductionmentioning

confidence: 99%

“…From the point of view of structural risk, all dams carry a risk of failure [17]. However, earthen dams are less rigid and susceptible to failure [18].…”

Section: Introductionmentioning

confidence: 99%

Earth Dam Design for Drinking Water Management and Flood Control: A Case Study

Merchán-Sanmartín

Aucapeña-Parrales²,

Alcívar-Redrován³

et al. 2022

Water

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Water management for natural channels is a frequent challenge due to the inefficient usage of water resources. The 2030 Agenda of the United Nations (SDG 6 of sustainable development) focuses its attention on water and sanitation. The Sara Guerrero site, located in the Mocache municipality in Los Ríos province (Ecuador), has issues related to access to drinking water, flood control, and crop irrigation that affect 4300 people and 24,000 hectares. The river overflows throughout the rainy season (late December to early May), whereas there is a noticeable water shortage during the dry season. This project aims to design a multiple-use earth dam on the Vinces River, simulating the resulting flow in extreme cases due to its possible failure. Such a study implies the development of a contingency plan for the preservation of life. It considers (i) dam breach analysis and design, and (ii) hydraulic model development using the ArcMap and HEC-RAS software packages. The design includes a waterproofing system that controls possible leaks and a cymbal spillway, mainly for raw water collection. The generated model showed that the shorter the failure time, the higher the maximum output flow. Modelling revealed that four towns would be affected for a maximum of 31 h in extreme cases. This approach offers comprehensive management for this community with regards to the earth dam and flood control.

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