水利学报2025，Vol.56Issue(1)：73-84,12.DOI:10.13243/i.cnki.slxb.20240086
流域数字孪生防洪模型的构建:以子牙河"23·7"大洪水复盘为例
Flood modeling developed for digital twin watershed:A case study of"23 7"great flood assessment in Ziya River Basin
摘要
Abstract
According to the large catchment characterized with complex runoff generation and confluence mecha-nisms and strongly affected by serious human activities,the key point to successfully set up the digital twin platform is how to select the most suitable approach to simulate the hydrological and hydraulic processes.In this study,tak-ing the"23·7"great flood happened in Ziya River Basin,a digital twin flood modelling has been built with inte-gration of hydrological and hydraulic models developed in China.In order to reach the objectives for clearly under-standing the causes and sources of the flood flow and quantitatively evaluating the performances of hydraulic con-structions,the distributed hydrological models covered full catchment above Xianxian hydro-junction and three high resolution 2D hydraulic models over three flood storage areas has been set up and integrated into a modelling platform.The simulation results of 26 gauging stations shows higher accuracy with 7％difference of flood peak and averaged NSE 0.7.From this modelling assessment,the upper and middle parts of the Ziya River Basin showed an obvious Horton and Dunne mixed runoff generation mechanism during the whole flood period.Scientifically opti-mized the outflow of large reservoirs such as Zhuzhuang and Huangbizhuang reservoirs,the flooded area in Xianxian flood storage area has been reduced 77％.The technical route of river basin digital twin flood modelling developed in this study is clear and feasible,which can be used as reference for guiding the implement of digital twin water-shed to other places in the future.关键词
"23·7"特大洪水/数字孪生流域/分布式水文模型/水动力模拟Key words
"23·7"catastrophic flood/digital twin watershed/distributed hydrological model/hydraulic simulation分类
天文与地球科学引用本文复制引用
马强,李郑淼,董芳睿,张珂健,杨邦,刘昌军..流域数字孪生防洪模型的构建:以子牙河"23·7"大洪水复盘为例[J].水利学报,2025,56(1):73-84,12.基金项目
国家重点研发计划项目(2023YFC3006702) （2023YFC3006702）
水利部重大科技项目(SKR-2022034) （SKR-2022034）
