水利信息化Issue(6)：1-4,31,5.DOI:10.19364/j.1674-9405.2023.06.001
数字孪生淮河防洪"四预"系统关键技术
Key technology of"four pre"system for flood control of digital twin Huaihe River
摘要
Abstract
Focusing on the key scientific and technological problems of forecasting,early warning,rehearsal,and preplan faced by the major needs of flood control and disaster reduction in the Huaihe River basin,new technology of space and earth intergration is used in this paper,such as UAV,laser radar and satellite remote sensing.This paper builds a data base with high-precision and multi-elements based on multi-source and multi-scale information technology,and builds a large-scale coupled hydrological and hydrodynamic simulation by using hydrological and hydrodynamic numerical simulation and parallel computing techniques.Based on the high-precision data base,high-performance computing power and high-precision algorithm,the flood control"four pre"platform of digital twin Huaihe River is established,which is applied in the review of major floods in 2020 and multiple rainstorm floods from 2021 to 2022 in the Huaihe River basin.The results show that the number of calculation nodes has been refined from 9 to 5 157,the size of calculation units has been refined from 9648 km2 to 17 km2,and the average efficiency coefficient is 0.8.The relative error of predicted flow peak at main control stations in the Huaihe River mainstream is basically below 10％,and the prediction period of flood can reach 2～4 days.The detailed simulation of all elements of the whole basin can be realized,which provides technical support for the digital twin basin,flood forecasting and project dispatching.关键词
数字孪生流域/防洪/"四预"系统/淮河Key words
digital twin basin/flood control/"four pre"system/Huaihe River分类
天文与地球科学引用本文复制引用
王凯,徐时进,刘昌军,胡友兵,任明磊,陈胜..数字孪生淮河防洪"四预"系统关键技术[J].水利信息化,2023,(6):1-4,31,5.基金项目
水利部重大科技项目(SKR-2022031,SKS-2022013,SKR-2022032) （SKR-2022031,SKS-2022013,SKR-2022032）
水利青年人才发展资助项目"淮河流域中小河流洪水预测预报关键技术研究与应用" （）
