大型调水工程是实现水资源优化配置的关键，也是构建国家水网的基础，具有跨流域覆盖区域广、水工建筑 物种类多、运行工况复杂等特点。采用调查研究的方法分别对浙东引水工程、千岛湖配水工程、南水北调东线工 程等大型调水工程数字孪生关键内容如数据底板、模型库和知识引擎等建设现状进行调研，根据各自工程特点分 析其数字孪生建设的特色，总结上述大型调水工程数字孪生建设的经验。在此基础上分析南水北调后续工程数 字孪生建设要求，提出数字孪生南水北调工程建设的若干建议，为南水北调后续数字孪生工程建设提供参考。

Large scale water diversion projects are the key to achieving optimal allocation of water resources and the foundation for building national water network. They have the characteristics of wide cross basin coverage areas and complex operating conditions due to the variety of hydraulic structures. The method of investigation and research is adopted to investigate the current construction status of digital twins in large-scale water transfer projects such as the Zhejiang East Water Transfers Project, the Qiandao Lake Water Distribution Project, and the East Route of the South-to-North Water Transfers Project. Based on the characteristics of each project, the characteristics of their digital twin construction are analyzed, and the experience of digital twin construction in the above-mentioned large-scale water diversion projects is summarized. On this basis, the requirements for the construction of digital twins in the subsequent projects of the South-to-North Water Transfers Project were analyzed, and several suggestions for the construction of digital twins in the South-to-North Water Transfers Project were proposed, providing reference for the subsequent construction of digital twins in the South-to-North Water Teansfers Project.