北京水务Issue(2)：22-25,4.DOI:10.19671/j.1673-4637.2025.02.05
HEC-RAS二维模型在永定河疏浚工程中的应用
Application of HEC-RAS 2D model in Yongding River dredging project
张帅 1高泽超 1杨海龙 2张晓龙 1赵方靖 2张鹏 1胡超1
作者信息
- 1. 北京市水利规划设计研究院 北京 100048
- 2. 北京市永定河管理处 北京 100165
- 折叠
摘要
Abstract
To quantitatively assess the impact of river dredging on flood conveyance,this study focused on the section of Yongding River from the north of the Fangshan Subway Line to Jingliang Road.A two-dimensional hydrodynamic model was established using HEC-RAS software based on measured topographic data to simulate flood processes under different peak flow rates.The changes in flood inundation range,water depth,and flow velocity before and after dredging were analyzed.The results showed that the inundation range after dredging was slightly smaller than before dredging,with the difference decreasing as peak flow increasing.The water depth decreased by no more than 8 cm in most sections,indicating the insignificant variation.The flow velocity change proportion ranged from-3.76％to 15.13％,with the largest change occurring at section K9+100 m due to the removal of water obstruction after excavation.The simulation results provide technical support for the scientific and rational management of Yongding River and serve as a reference for similar projects.关键词
HEC-RAS/二维数值模拟/河道疏浚/永定河/洪水Key words
HEC-RAS/two-dimensional numerical simulation/channel dredging/Yongding River/floods分类
建筑与水利引用本文复制引用
张帅,高泽超,杨海龙,张晓龙,赵方靖,张鹏,胡超..HEC-RAS二维模型在永定河疏浚工程中的应用[J].北京水务,2025,(2):22-25,4.
