Core Viewpoint - The opening of the Tianshan Victory Tunnel marks the completion of the G0711 expressway from Urumqi to Yili, which is the longest highway tunnel in the world and enhances connectivity to southern Xinjiang [1] Group 1: Project Overview - The Urumqi-Yili Expressway has a total length of 324.7 kilometers and a total investment of 46.7 billion yuan, taking over five years to complete [1] - The Tianshan Victory Tunnel, located in the middle section of the expressway, is 22.13 kilometers long, equivalent to the total length of five Nanjing Yangtze River Bridge highway bridges [1] Group 2: Engineering Challenges - The tunnel construction faced significant challenges, including a maximum ground stress value of nearly 22 MPa, which means a rock the size of a fingertip must withstand over 200 kilograms of weight [1] - The construction environment included high-altitude conditions over 3,000 meters, with an average annual temperature of -5.4°C and minimum temperatures reaching -41.5°C [1] Group 3: Innovative Construction Techniques - Builders utilized China's independently developed innovative pressurized injection method hard rock tunneling machine, which is the first of its kind globally [1] - A creative construction plan involving "three tunnels + four shafts" was adopted, allowing the entire tunnel to be segmented for construction, reducing the difficulty of single-tunnel excavation and shortening the construction period by over 25% [1]