![]() based on the results of on-site inspection of the dam and assessment method of dam failure modes, analyzed all potential failure modes of the dam. DND Hartford proposed the risk analysis method to improve the failure mode and effect analysis method, and identified the dam failure mode. A substantial amount of literature has been reported on dam failure control. The dam failure path is the specific effect chain in dam failure modes analysis, caused by dam failure. #Dambrk software free download softwareNational Weather Service developed a series of software and models for dam-break flood calculation, including the Dambrk risk analysis model. ![]() ![]() The safety assessment process is shown in Figure 1. In order to standardize the process of dam risk analysis, the United States improve the steps of dam failure mode risk identification and risk management optimization in the dam safety management, and then summarized the improvement results and published relevant reports. This method divides the risk situation constituted by various factors into four levels: very high, high, medium and low, and assigns corresponding risk value. Bureau of Reclamation (USBR), which took into account a variety of potential risk factors, including the age of dam engineering, construction quality, seepage, structure, etc. ![]() On this basis, field scoring method was proposed for risk assessment of dams by the U.S. In 1974, the American Society of Civil Engineers published a report on risk analysis of dam spillway, which detailed the steps of risk assessment of dam spillway, and the report attracted the attention of hydrological circles in various countries. The idea of applying risk analysis to the field of dam safety was first put forward by the American Society of Civil Engineers. Since then, risk analysis technology has been widely studied and applied in various fields. Atomic Energy Commission, which proposed to apply risk analysis to the safety assessment of nuclear power plants for the first time. The concept of risk analysis was first proposed by the U.S. By identifying the failure path of dam failure and the potential failure path, thus failure is prevented, extending not only the service life of the dam, but also reducing its environmental repercussions. Dam safety risk analysis and managemen is a set of policies and procedures developed to control risks through management: identification, evaluation, handling and monitoring of risks. The determination of dam failure is technically challenging thus, prevention is more suited. Francis dam (1928) and Teton dam (1976) in the United States, the Vajont dam (1963) in Italy, and the Banqiao, Shimantan, Zhugou and Tiangang dams in China, which brought serious disasters to the downstream people and society. The dam failure and its consequences are, due to experience, extremely harmful the economic and environmental losses can be unimaginable, such as the Malpasset arch dam (1959) in France, St. According to results, the two top initial failure paths were insufficient design of upstream anti-seepage (R6) or defective water-tight screen and corrosion (R7).ĭams are water-retaining structures used for various purposes: irrigation, electricity generation, water control and consumption, recreational activities, amongst others. Based on the fuzzy mathematics and VIKOR method, a dam failure path identification method is established, and then the dam failure paths are identified and sorted for a case study: gravity dam located at the junction of Yibin County (China). To account for this, the DEMATEL method is used to modify the evaluation result of the severity of the failure consequence, caused by the dam failure path. ![]() However, this analysis can be misleading since the relationship among the failure paths is not considered. This approach analyzes both the dam failure path (the specific effect chain of the failure mode) and the damage degree, by identifying and sorting the severity caused by the dam failure path. Traditionally, a dam failure is identified using the failure mode and effect analysis. Dams are important water-resisting structures prone to failure, causing huge economic and environmental losses. ![]()
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