人民长江2018，Vol.49Issue(12)：23-29,7.DOI:10.16232/j.cnki.1001－4179.2018.12.005
河道数据对流溪河模型预报中小河流洪水的影响
Impact of river channel characteristic data on flood forecast of small and medium sized watershed based on Liuxihe Model
摘要
Abstract
In this paper,a flood forecast model of small and medium sized watershed based on Liuxihe Model is established for the Qinjiang River Basin and the impacts of the river channel characteristic data including the cross－section shape,cross－sec-tion size and channel levels on the flood forecast accuracy are quantitatively evaluated.The results show that the more the river channel level is,the higher the simulated flood peak flow is,the larger the runoff coefficient is,the earlier the peak flow occurs,and the better simulated result it gets.When constructing the Liuxihe model,assuming the river channel cross－section shape as rectangular and estimating the cross－section size with satellite remote sensing image are feasible and the simulated accuracy of flood process meets the required real－time flood forecast accuracy.Generalizing the basin river system as 3 levels is proposed,which would have a better performance in small and medium sized watershed flood simulation with the revised Liuxihe model.关键词
洪水预报/中小河流/分布式物理水文模型/流溪河模型/琴江流域Key words
flood forecasting/small and medium sized river/distributed physical hydrological model/Liuxihe Model/Qinjiang River basin分类
建筑与水利引用本文复制引用
覃建明,陈洋波,李明亮,王幻宇..河道数据对流溪河模型预报中小河流洪水的影响[J].人民长江,2018,49(12):23-29,7.基金项目
国家自然科学基金项目(51479033) （51479033）
江西水利科技项目(KT201407) （KT201407）
"十二五"国家科技支撑计划项目(2012BAK10B06－04) （2012BAK10B06－04）
广东省科技计划项目(2013B020200007) （2013B020200007）
