基于GIS+BIM的滇中引水工程数字场景构建研究

本文以云南省滇中引水工程为例，采用GIS+BIM数字化技术，对滇中引水工程数字化场景构建技术进行探索，旨在为长距离引调水工程的数字孪生底座构建提供可行的技术路径。通过GIS三维模型构建、BIM模型构建及模型集成的研究，对比了主流的GIS三维建模高精度数据的采集和处理技术，阐明了三维GIS大场景搭建、工程实景三维模型建立、多类型引水建筑物建模的方法，同时提出了工程数字化模型集成的成套技术路线，采用新一代三维驱动引擎，通过投影变换算法实现长距离不同工程坐标系下BIM模型在标准GIS球面场景中的无缝拼接，达到全线模型的集成，构建了工程三维应用的数字化基础，可为水利工程数字孪生建设抛砖引玉，提供建设指引。

Research on digital scene construction of Central Yunnan Water Diversion Project based on GIS+BIM

Taking the Central Yunnan Water Diversion Project as an example, this paper adopts GIS+BIM digital technology to explore the digital twin scene construction technology of the Central Yunnan Water Diversion Project, aiming to provide a feasible technical path for the digital base construction of the long-distance water diversion project. Through the research on GIS 3D model construction, BIM model construction and model integration, this paper compares the mainstream GIS 3D modeling high-precision data collection and processing technology, clarifies the methods of 3D GIS large scene construction, engineering real scene 3D model construction, and multi type water diversion building modeling, and proposes a complete set of technical routes for engineering digital model integration, using a new generation of 3D drive engine, The projection transformation algorithm is used to realize the seamless splicing of BIM models in standard GIS spherical scenes under different engineering coordinate systems over a long distance, achieve the integration of whole line models, build a digital foundation for three-dimensional engineering applications, and provide guidance for the digital twin construction of water conservancy projects.