世界最长高速公路隧道通车，这三台国产盾构机功不可没

Core Viewpoint - The opening of the Tianshan Victory Tunnel marks the completion of the G0711 highway, significantly reducing travel time between Urumqi and Korla from 7 hours to 3.5 hours [1]. Group 1: Project Overview - The Tianshan Victory Tunnel is part of the G0711 Urumqi to Ruoqiang highway, spanning 324.7 kilometers and connecting Urumqi, Hejing County, Yanqi Hui Autonomous County, Korla City, and Weili County [1]. - The tunnel itself is 22.13 kilometers long and is a critical engineering project for transportation between northern and southern Xinjiang [1]. Group 2: Construction Challenges and Innovations - The tunnel's construction faced severe challenges, including a maximum depth exceeding 1,112 meters and the need to traverse 16 geological fault zones, characterized by high stress, cold temperatures, high seismic intensity, and high altitude [3]. - Traditional mining methods would have taken approximately 12 years, while conventional TBM methods were also inadequate for the complex geological conditions [3]. - The construction team implemented a "main tunnel + middle guiding tunnel" excavation scheme, utilizing two innovative TBMs, "Tianshan" and "Victory," which can switch excavation modes based on geological conditions [3]. Group 3: Achievements and Future Impact - After over four years of challenging excavation, the Tianshan Victory Tunnel is expected to be fully operational by the end of 2024, facilitating easier movement and cultural exchange between northern and southern Xinjiang [5]. - The construction team also installed a sophisticated ventilation system by creating four vertical shafts, including one at an altitude of 3,660 meters, which set world records for depth, diameter, and elevation [5].