摘要 : In flood control dams it is not only the failure to prevent flood larger than their design carry- ing capacity, but also the uncertainties of hydraulic factors that caused disasters. In general, the hy- draulic risk is not conside... 展开 In flood control dams it is not only the failure to prevent flood larger than their design carry- ing capacity, but also the uncertainties of hydraulic factors that caused disasters. In general, the hy- draulic risk is not considered in most of the hydrological analysis in floodproofing plan and design. In this paper, a method of evaluating the hydraulic risk is developed by employing risk theory, and the concept can easily be extended to other types of risk analysis. 收起