中国本土创新重器助力乌鲁尉高速公路全线通车

Core Viewpoint - The successful completion of the Tianshan Victory Tunnel, a key project of the Belt and Road Initiative, significantly reduces travel time between Urumqi and Korla from approximately 7 hours to about 3 hours, showcasing advanced tunneling technology and engineering capabilities [1][2]. Group 1: Project Overview - The Tianshan Victory Tunnel is part of the Urumqi-Korla Expressway, which is recognized as a critical engineering project facing extreme construction challenges, including high geological stress, cold temperatures, seismic activity, high altitude, and multiple fault zones [1]. - The tunnel is referred to as the "Everest of tunnel engineering" due to its complex construction environment, which traditional mining methods would take about 12 years to navigate [1]. Group 2: Technological Innovations - China Communications Construction Company (CCCC) developed the world's first innovative pressurized injection method hard rock tunneling machines, "Tianshan" and "Victory," which have a diameter of 8.43 meters and weigh over 2000 tons [1]. - These machines can intelligently switch tunneling modes based on geological conditions, allowing for efficient excavation in intact rock and rapid conversion to pressurized concrete support in weaker sections [1][2]. Group 3: Performance Achievements - The "Victory" machine set a record for the highest daily excavation rate of 35 meters and a monthly record of 528 meters in high-altitude, cold conditions [2]. - The "Tianshan" machine successfully traversed a giant fault with a water inflow exceeding 10,000 cubic meters, achieving the main tunnel's completion 17 months ahead of schedule by December 2024 [2]. Group 4: Ventilation Shaft Development - The construction of the 2nd ventilation shaft, reaching a depth of 707 meters at an altitude of 3660 meters, presents another significant challenge due to extreme environmental conditions [3]. - The "Chuangxin" machine, with a diameter of 11.4 meters, integrates TBM technology with traditional drilling methods, achieving the world's first large-diameter hard rock vertical shaft with intelligent operations for excavation, waste removal, and support [3]. - This machine has set records for vertical excavation depth, diameter, and altitude, marking a milestone in deep space development equipment in China [3].