水利信息化Issue(5)：22-28,7.DOI:10.19364/j.1674-9405.2025.05.004
典型小流域城市水系水文水动力耦合过程模拟研究
Research on coupled hydrological and hydrodynamic processes simulation of urban water systems of typical small basin
摘要
Abstract
To effectively simulate the runoff generation and confluence processes under heavy rainfall,complex underlying surface conditions,and water engineering scheduling in coastal cities,this study took the Jiushijiuwan typical small basin in Zhangzhou City,Fujian Province,as the research area.A one-dimensional hydrodynamic model was coupled with a traditional basin hydrological model to construct a hydrological-hydrodynamic coupling model incorporating the scheduling process.Based on the runoff characteristics of main underlying surface types in different catchment zones,land use was classified into urban and non-urban underlying surfaces.Measured data from three outer river water level stations were taken as boundary conditions,and observed inner river water levels were used for initial and verification conditions.The model was calibrated and validated using two heavy rainfall events,yielding an average absolute error of 0.091 m and an average relative error of 2.72%.The results demonstrated that the coupled model can accurately simulate the runoff generation and confluence processes of the catchment zones on the underlying surfaces of urban and non-urban areas,as well as the flow evolution in complex river networks such as dendritic and annular river networks.This study can provide methods and ideas for the construction of urban flood control and drainage,"Four Pre"application,and digital twin basins construction.关键词
水文水动力耦合模型/典型小流域/城市雨洪模拟/水工调度Key words
hydrological-hydrodynamic coupling model/typical small basin/urban rainstorm flood simulation/water engineering scheduling分类
建筑与水利引用本文复制引用
付超,薛伟,毕彦杰..典型小流域城市水系水文水动力耦合过程模拟研究[J].水利信息化,2025,(5):22-28,7.基金项目
国家重点研发计划项目(2022YFC3204600) （2022YFC3204600）
