数字孪生流域水文映射研究与实践

Research and practice of hydrological mapping in digital twin basin

摘要:

为研究水文映射的建设内容和相关特点,选取东汶河流域作为试点流域进行水文映射相关技术和“四预”应用,以及水文映射相关流域数据底板构建、分布式水文模型搭建、水文水动力耦合等技术研究,并开展数字孪生流域水文映射“四预”应用研发。通过分布式水文模型更加精细、准确地模拟流域的水文过程,通过分布式水文模型和水动力模型的耦合更加客观地演算河道洪水的演进过程,数字孪生流域水文映射“四预”应用涵盖水文业务工作的测报、预报和预警的重要工作环节,对实际水文业务形成支撑和提升作用。通过东汶河数字孪生流域水文映射研究与实践,初步勾画水文映射的建设内容及形成相关技术成果。

Abstract:

To investigate the construction contents and characteristics of hydrological mapping, the Dongwen River Basin was selected as a pilot basin to carry out research on hydrological mapping technologies and the applications of the "Four Pre" system. The research included the construction of a basin data baseplate for hydrological mapping, the development of a distributed hydrological model, research on hydrological–hydrodynamic coupling technology, and the development of the "Four Pre" application for hydrological mapping in a digital twin basin. The application of the distributed hydrological model enabled more refined and accurate simulation of basin hydrological processes. The coupling of the distributed hydrological model and the hydrodynamic model allowed more objective simulation of river flood routing processes. The "Four Pre" application for hydrological mapping in the digital twin basin covered key links of hydrological operations, including monitoring, forecasting, and early warning, providing support for and enhancing practical hydrological work. Through the research and practice of hydrological mapping in the Dongwen River digital twin basin, the construction contents of hydrological mapping have been preliminarily outlined and relevant technical achievements have been obtained.