The Theory and Application of Digital Twin Technology in the Whole Life Cycle Management of Intelligent Water Conservancy Project 
Zibo Jia

College of Water Conservancy And Hydropower Engineering Gansu Agricultural University, Lanzhou, 730000；

Abstract: In order to solve data fragmentation problems, lagging management and control, and empirical decision-making in the whole life cycle management of traditional water conservancy projects, and to meet the development requirements of the Ministry of Water Resources for the intelligent full coverage of medium-sized and above reservoirs in 2025, this paper carries out the deep integration research of digital twin technology and the whole life cycle management of water conservancy projects. Firstly, an integrated theoretical framework is constructed to clarify the core orientation of intelligent management and control and the coordination logic of the whole process. Secondly, a phased digital twin model is established, which covers the GIS + MIKE21 coupling model in the planning stage, the BIM refinement model in the construction stage, the BIM / GIS fusion intelligent simulation model in the operation and maintenance stage, and the whole life cycle data fusion model in the decommissioning stage. Finally, a data collaboration platform with five-level architecture of ' perception-network-data-service-application ' is built, which integrates four core functions of data monitoring, model management, intelligent decision-making and cross-subject collaboration. Through the practical cases of Guanzhuang Reservoir and Weishan Irrigation District, the scheme can effectively improve the accuracy and efficiency.

Keywords: Digital Twin; Water Conservancy; Life Cycle Management; Smart Water Conservancy; Collaborative Platform

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