Dams and Appurtenant Facilities

Bureau, Gilles

doi:10.1201/9781420042443.ch26

Cited by 4 publications

(6 citation statements)

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“…where RF population is the downstream human population at risk, RF property is the property risk factor and depends on the value of private, commercial, industrial, or governmental property in the potential flood path. 60 Those information can be obtained from detailed breach Since 1850, there have been 63 known dam failure in the United States (exclusive of tailings dams) that have involved fatalities (Figure 5). 63 It corresponds to the frequency of occurrence of 0.38 per year of dam failure.…”

Section: Semi-quantitative Seismic Ranking Of Dam Portfoliomentioning

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: Semi-quantitative Seismic Ranking Of Dam Portfoliomentioning

confidence: 99%

Seismic risk prioritization of a large portfolio of dams: Revisited

Hariri-Ardebili

Nuss²

2018

Advances in Mechanical Engineering

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“…This is an easy manner to evaluate earthquake hazard via way of means of figuring out the hazard class. ICOLD introduces that the whole risk of dams includes structural and socio-monetary factors [33]. The first is especially based upon at dam height and ability of the reservoir.…”

Section: Methodsmentioning

confidence: 99%

Risk Management of Large Dams under Operation Stage and Case Studies for Cascade System

Tosun

2024

Civil Engineering

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In recent specifications, there are regulations stating that there should be no accidents on construction sites. In fact, construction-related risks have cultural, social, and technological dimensions, and risks can be minimized by appropriate identification of these factors. Although there are no great social and cultural uncertainties in the applications carried out so far, the technological dimension, especially the use of digital technologies, has been at a minimum level. Currently, the construction industry investigates how social-technical systems interact during the construction of all large engineering structures, including dam structures, and their effects on risks at construction sites. However, after the completion of the construction of these structures, management of the risk posed by the relevant structures for the environment is a very separate issue. This study focuses on the total risk of dam structures that have been constructed and are in the operational stage. Due to damage or failure of a dam, downstream life is affected and huge hazards may occur. In fact, major disasters may occur depending on the amount of water to be discharged. For this purpose, the risk of dams is defined according to their type, height, amount of water they store, age of the dam, downstream evacuation requirement, and potential damage area. In newly presented methods, local ground effects are also included. In addition, the fact that the relevant structure is in a cascade system affects the degree of hazard that will occur and increases the total risk of the system. In this study, the parameters affecting the total risk of dam structures in the operational stage are summarized, various total risk methods are mentioned, the total risks for two separate rivers located in the largest basin of the country are discussed and the necessary measures to be taken on the basis of risk management are suggested. Finally, a new concept is introduced for risk management of dams in the cascade system.

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“…In this section, we modify a seismic risk ranking method (Bureau et al 2003) to analyse the anti-seismic capability and improve public awareness of potential seismic hazards. A more detailed description is presented throughout the following subsections.…”

Section: Methodsmentioning

confidence: 99%

“…ESI = PGA × (M − 4.5) 3 . The corresponding standardized values for the above-mentioned parameters could be achieved from Bureau (2003), listed in Tables 2 and 3.…”

Section: Seismic Risk Ranking For Large Damsmentioning

confidence: 99%

“…As a preliminary indication of seismic hazard to dams, Bureau et al (2003) introduced total risk analysis (TRF) to portray potential risk via the summation of seismic performance factors, which highlight the establishment of discriminant functions and are extensively employed by engineers for assigning priorities of critical dams. The performance formulation is represented as…”

Section: Seismic Risk Ranking For Large Damsmentioning

confidence: 99%

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Seismic hazard and total risk analysis for cascade dams situated in geologically sensitive regions

Zhang

Ben-de

2022

Preprint

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A modified version of a seismic risk assessment method is presented that generalises original risk analytical processes, constructs interrelationships among hazard variables in pre-assign weight-based formats, and establishes priorities to address potentially vulnerable dams. The concerned parameter values contained in each component are labelled based on adjusted grading standards, respecting the regional difference in hydraulic structure attributes and safety acceptability ranges. The cascade dams in Dadu River, China, are selected to test the applicability of the proposed method. We systematically investigate potential seismic hazards to demonstrate the implications of earthquake on dam safety. The results indicate that the adapted parameter ranges correspond with the physical aspects of the dams and potential social-economic consequences in geologically sensitive regions. Correspondingly, the hazard recognition levels accommodate their local near-source earthquake conditions. Moreover, the investigation guides local emergency services with warnings of potential dam damages and ensuing floods when encountering critical earthquake shaking.

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Dams and Appurtenant Facilities

Cited by 4 publications

References 0 publications

Seismic risk prioritization of a large portfolio of dams: Revisited

Seismic risk prioritization of a large portfolio of dams: Revisited

Risk Management of Large Dams under Operation Stage and Case Studies for Cascade System

Seismic hazard and total risk analysis for cascade dams situated in geologically sensitive regions

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