The method of Analytic Hierarchy Process is used to identify the risk events of flood. The probability of flood is determined by construction period and floodcontrolstandard.
洪水风险事件识别采用层次分析法进行，并结合施工工期和防洪标准来确定洪水发生的概率。
2
The execution of Yangtze valley floodcontrol plan will remarkably upgrade the floodcontrolstandard of flood protected zone, and produce remarkable economic, environmental and social benefits.
长江流域防洪规划的实施，将显著提高防洪保护区的防洪标准，其经济效益、环境效益、社会效益十分显著。
3
In connection with the determination of floodcontrolstandard, the selection of drainage structure form, and multipurpose use of flood discharge facilities in tailings pond, some views are given.