编制洪水风险图是落实防汛工作从"控制洪水"向"洪水管理"转变和开展洪水风险管理的重要基础支撑,也是国内防洪减灾工作中重要的非工程类措施之一.洪水风险图编制是一个复杂的过程,涉及的基础资料较多,所需考虑的要素复杂,而洪水分析方案的设置是洪水风险图编制中至关重要的部分,关系到洪水风险图编制结果的实用性.本文以赣抚大堤防洪保护区为例,从洪水来源、洪水分析频率、洪水组合方式、可能溃口位置、溃口宽度、溃决时机等方面,并权衡实用性和易用性对设计方案优化组合,简述赣抚大堤洪水风险图编制过程中洪水分析方案的设置规则,为江西省及其他地区全面开展洪水风险图编制提供参考.%Flood risk mapping is an important foundation for the implementation of flood control work from flood control to flood management and provides an important foundation support for flood risk management.It is one of the improtant non-engineering measures for flood control and disaster relief in China.Flood risk mapping is a complicated process ,involving much basic informa-tion and the complex factors need to be considered.Flood analysis schemes are one of a vital part of the preparation of flood risk mapping,which is related to the practicality of flood risk mapping results.In this paper,we took flood protectition area of Ganfu Grand Dyke as an example,setting the rules for flood analysis schemes in the process of flood risk mapping of Ganfu Grand Dyke from these aspects ssuch as flood sources,flood analysis frequency,flood combinations,may breach position,breach wideth and out-burst opportunity and weighing the practicality and usability in order to optimize the analysis scheme are stated.It provides a refer-ence for this province and other areas to carry out a comprehensive flood risk mapping.
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