王育杰 1，施凱敏 2，婁書建 1

　　(1.水利部黃河水利委員會三門峽水利樞紐管理局，河南 三門峽 472000;

　　2.北京慧聯無限信息技術有限公司，河南 鄭州 450000)

　　摘 要：為建設數字孿生三門峽水利樞紐與智慧三門峽水庫，通過無人機數字正射影像、傾斜攝影及重點工程與主要建筑物的精細化數字三維建模等，建立基于 3D 地球的數據底板，在此基礎上應用計算數學等解決庫區空間信息即時測算難題，利用大數據分析技術解決斷面沖淤快速比對難題。依靠水三維仿真自動建模等技術，以遙測水位、流量、含沙量與樞紐閘門啟閉態、水電站機組運行態等核心要素信息為驅動源，實現三門峽庫區及壩后全域空間范圍水體的實時動態映射，整體上取得良好的可視化效果。利用計算機編程技術顯著提升三門峽水庫調洪演算模型的算據、算法與算力，解決預報、預警、預演與預案相結合難題，采用先進技術為其他多類業務進行智慧化賦能，能夠全天候為三門峽水利樞紐防汛抗旱決策、水資源調度與運行管理等提供支持，對其他水利樞紐及水庫具有良好的借鑒與參考價值。

　　關鍵詞：數字孿生;傾斜攝影;要素信息;實時映射;模擬;水三維仿真;調洪演算

　　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