王育杰 1，施凯敏 2，娄书建 1

　　(1.水利部黄河水利委员会三门峡水利枢纽管理局，河南 三门峡 472000;

　　2.北京慧联无限信息技术有限公司，河南 郑州 450000)

　　摘 要：为建设数字孪生三门峡水利枢纽与智慧三门峡水库，通过无人机数字正射影像、倾斜摄影及重点工程与主要建筑物的精细化数字三维建模等，建立基于 3D 地球的数据底板，在此基础上应用计算数学等解决库区空间信息即时测算难题，利用大数据分析技术解决断面冲淤快速比对难题。依靠水三维仿真自动建模等技术，以遥测水位、流量、含沙量与枢纽闸门启闭态、水电站机组运行态等核心要素信息为驱动源，实现三门峡库区及坝后全域空间范围水体的实时动态映射，整体上取得良好的可视化效果。利用计算机编程技术显著提升三门峡水库调洪演算模型的算据、算法与算力，解决预报、预警、预演与预案相结合难题，采用先进技术为其他多类业务进行智慧化赋能，能够全天候为三门峡水利枢纽防汛抗旱决策、水资源调度与运行管理等提供支持，对其他水利枢纽及水库具有良好的借鉴与参考价值。

　　关键词：数字孪生;倾斜摄影;要素信息;实时映射;模拟;水三维仿真;调洪演算

　　Study on design and application of digital twin of Sanmenxia hydro project

　　WANG Yujie 1，SHI Kaimin 2，LOU Shujian 1

　　(1.Sanmenxia Multipurpose Project Administration，Yellow River Conservancy Commission of the Ministry of Water Resources，Sanmenxia 472000，China;

　　2.Beijing Huilian Infinite Information Technology Co.，LTD.，Zhengzhou 450000，China)

　　Abstract：In order to develop digital twin of Sanmenxia hydro project and intelligent Sanmenxia reservoir, the database based on 3D Earth is established through UAV digital orthophotography, oblique photography and refined digital 3D modeling of key projects and main buildings. On this basis, computational mathematics is applied to solve the problem of real-time spatial information calculation in the reservoir area. Big data analysis technology is used to solve the problem of rapid comparison of cross-sectional scour and silting. Based on the technology of three-dimensional water simulation and automatic modeling, the elements are taken as the driving source, including telemetry water level, flow rate, sediment concentration, the opening and closing state of the hub gate, the operation state of the hydropower station and other core elements, so that the real-time dynamic mapping of the whole spatial range of water in the Sanmenxia reservoir area and area behind the dam is realized, which has achieved good overall visualization performance. The application of computer programming technology significantly improves the professional capabilities of the calculation basis, algorithm and calculation power of Sanmenxia reservoir flood regulation simulation model, and solves the problem of combining forecasting, early warning, simulating and pre-planning. Relying on advanced technology, we can enable other types of intelligent business, which can provide all-weather support for flood control and drought relief decision-making, water regulating and operation management of Sanmenxia hydro project. The study will serve as a good reference for other hydro projects and reservoirs.

　　Key words：digital twin;oblique photography;element information;real-time mapping;simulation;water 3D simulation;flood regulation