渝昆高铁桥梁建设全部完成

Core Viewpoint - The completion of the last box girder placement for the Yukun High-Speed Railway marks the transition into the final construction phase, highlighting the project's significance in China's high-speed rail network [1] Group 1: Project Overview - The Yukun High-Speed Railway is a crucial part of China's "eight vertical and eight horizontal" high-speed rail network, connecting Chongqing West Station to Kunming South Station through multiple provinces [1] - The construction faced significant challenges, including complex logistics and high safety risks due to the proximity to existing rail lines and high-voltage power lines [1] Group 2: Technological Innovations - The construction team utilized the Beidou navigation system to enhance construction accuracy, implementing a "sky, ground, vehicle" integrated technology framework for millimeter-level path planning and dynamic correction [1] - The successful completion of the box girder placement involved 49 instances of line closure for construction activities, demonstrating effective project management and execution [1] Group 3: Future Implications - With the completion of the box girder placement, the Yukun High-Speed Railway is now entering the track laying and subsequent engineering phases, aiming to reduce travel time between Chongqing and Kunming to approximately two and a half hours upon operation [1]