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首页> 外文期刊>Journal of Infrastructure Systems >Application of Dormant Reliability Analysis to Spillways
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Application of Dormant Reliability Analysis to Spillways

机译：休眠可靠性分析在溢洪道中的应用

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摘要

Dams are essential infrastructures for water supply, flood control, energy production, and irrigation. A critical component for the safety of a dam is the spillway system which, by controlling releases, prevents overtopping of the dam. This in turn reduces impacts associated with excessive downstream flows and upstream water levels on infrastructures, the population, and the environment. This paper addresses reliability issues related to emergency spillways and specifically the estimation of their reliability level after prolonged periods of dormancy. During dormancy, spillway components are exposed to the environment and sustain cumulative damage that may trigger latent failures or failures on demand. Regular inspections and tests are used to detect and remediate latent failures and to assess the level of deterioration of components. The purpose of this study is to develop procedures to account for dormancy in the reliability analysis of spillways. It also demonstrates how these procedures can be used to evaluate the impact of the frequency of inspections and tests on the overall reliability of the spillways. This paper introduces measure of performance, dormant availability analysis, and dormant availability analysis via integrity assessment as methods to illustrate the unavailability or probability of failure on demand of a spillway system as a function of its dormancy period. This information can be used to determine the optimum frequency of inspection and tests taking into account the safety of the structure as well as the costs associated with inspection and testing.
机译：大坝是供水，防洪，能源生产和灌溉的重要基础设施。大坝安全的关键组成部分是溢洪道系统，该溢洪道系统通过控制释放量来防止大坝超车。反过来，这减少了与过多的下游流量和上游水位对基础设施，人口和环境相关的影响。本文讨论了与应急溢洪道有关的可靠性问题，尤其是在长时间休眠后对其可靠性水平的估计。在休眠期间，溢洪道组件会暴露于环境中并遭受累积性破坏，这可能会触发潜在故障或按需发生故障。定期检查和测试用于检测和补救潜在故障并评估组件的损坏程度。这项研究的目的是开发一种程序来解决溢洪道可靠性分析中的休眠问题。它还演示了如何使用这些程序来评估检查和测试频率对溢洪道整体可靠性的影响。本文介绍了性能度量，休眠可用性分析和通过完整性评估进行的休眠可用性分析，作为说明溢洪道系统需求的不可用性或故障概率随其休眠时间而变化的方法。考虑到结构的安全性以及与检查和测试相关的成本，该信息可用于确定检查和测试的最佳频率。

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