安徽省高精度测绘技术 服务国家重大工程成效显著

Core Viewpoint - The project undertaken by Anhui Provincial Fourth Surveying and Mapping Institute for the Gansu-Zhejiang UHVDC project has successfully passed acceptance, marking a significant milestone in China's power development strategy during the 14th Five-Year Plan period [1] Group 1: Project Overview - The project involves the construction of the world's first 500 kV GIL (Gas Insulated Line) crossing the Yangtze River in Wuhu City, Anhui Province [1] - The high-precision measurement control network project will provide millimeter-level measurement accuracy for the safe operation of the underwater tunnel [1] Group 2: Technical Innovations - To address the challenges of ground subsidence and instability in elevation control benchmarks caused by shield tunneling, surveyors established permanent bedrock markers over 50 meters on both banks of the Yangtze River [1] - The integration of aerial oblique photography with underground geological exploration data has led to the creation of a unified spatial reference 3D visualization model, enhancing the project's interactive capabilities [1] Group 3: Efficiency Improvements - The innovative approach has reduced the construction cycle of the control network by over 40%, providing a new efficient and scientific path for major engineering measurements [1]