人民黄河2025，Vol.47Issue(5)：58-65,8.DOI:10.3969/j.issn.1000-1379.2025.05.010
梯级液压坝对河床冲淤空间分布的影响
Spatial Evolution of the Effect of Cascade Hydraulic Lifting Dam on the Riverbed Erosion and Deposition Characteristics
摘要
Abstract
In river restoration,a group of hydraulic step dams is commonly used to regulate the flow of the river channel and achieve ecologi-cal restoration goals.At the same time,the characteristics of siltation in the step hydraulic dam control unit will change,and the spatial dis-tribution law is not yet clear.This paper focused on the middle reaches of the Fenhe River step hydraulic dam group control section as the re-search subject to resolve this issue.It created a two-dimensional numerical model of water and sand in this section based on Delft 3D FM and studied the spatial changes of siltation characteristics in the step hydraulic dam control unit under four different hydraulic dam group operation schemes and four flood conditions with varying frequencies by using this model.The results show that from the changes in the overall siltation state of the river channel over time,the siltation amount of the dam control unit by level along the course of the first decrease,then increase and then decrease in the 1996 flood period,the change is more noticeable.The largest amount of siltation occurs during the hydraulic dams'full operation throughout the river section and other three programs.The hydraulic dams'gradients have a greater impact on the river siltation process.关键词
梯级液压坝/坝控单元/冲淤特性/空间变化/数值模拟/汾河中游Key words
cascade hydraulic lifting dam/river segmentation based on dams/characteristics of scouring and siltation/spatial variability/numerical simulation/Middle Fenhe River分类
建筑与水利引用本文复制引用
程悦,任春平..梯级液压坝对河床冲淤空间分布的影响[J].人民黄河,2025,47(5):58-65,8.基金项目
水利工程安全与仿真国家重点实验室开放基金资助项目(HESS-2006) （HESS-2006）
山西省自然科学基金资助项目(202103021224116) （202103021224116）
山西省回国留学人员科研教研项目(2023-67) （2023-67）
