Progress in physical modeling experiments of dike overtopping breach
With the development of socio-economy,the population and asset density within flood protection areas have experienced a significant increase.Once extreme rainfall events lead to the breach of levees,it poses a signif-icant threat to people's lives and properties.It is crucial to deepen our understanding of the mechanisms behind dike failure and the flow characteristics of dike breach in order to prevent and control water disasters.The physical model experiment is an important approach to study the mechanism of dike breach and the characteristics of flow during dike failure.It is necessary to summarize and consolidate the numerous achievements in this field in order to facilitate further research.This paper reviews the related research results obtained from physical modeling experi-ments on overtopping breaching of dikes in recent years.The experimental setup and measuring equipment used in these experiments were outlined,and the research findings on hydraulic characteristics,breach evolution processes and discharge rates at dike breaches were summarized.However,despite some notable progress in research,we found that the changing rules of water dynamics inside and outside the river channel in existing experimental results are not yet mature,and there is still limited understanding of the flow and sediment transport mechanism at the dike breach.Therefore,further experimental research on the mechanism of overtopping breaching of dikes and the flow characteristics of dike breach is necessary.
万方数据
维普
