渝万高铁两条隧道同日贯通

Core Viewpoint - The successful completion of the Sujiaping and Tapin Village tunnels marks a significant milestone in the construction of the Yuwan High-Speed Railway, indicating that the project is entering a critical phase towards timely operation [1][3]. Group 1: Tunnel Details - The Tapin Village tunnel, measuring 3,484 meters, is a key node and one of the first standardized demonstration work sites, with 92.3% of its section classified as IV-grade surrounding rock, facing geological challenges such as gently inclined rock layers and gypsum mudstone [3]. - The Sujiaping tunnel, with a length of 6,655 meters and a minimum burial depth of 19 meters, traverses multiple accumulation and landslide bodies, featuring widespread unfavorable geological conditions, requiring seven types of lining to adapt to geological risks [3]. Group 2: Safety Measures - To ensure construction safety, the contractor, China Railway 11th Bureau, has established a closed-loop system comprising "personnel positioning + lining anti-void monitoring + intelligent emergency warning" [5]. - Comprehensive safety management is implemented with a focus on responsibility penetration, creating a hierarchical management grid that clarifies safety responsibilities at all levels, ensuring effective on-site safety management [5]. Group 3: Project Impact - The Yuwan High-Speed Railway is part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, connecting Chongqing East Station to Wanzhou North Station, significantly reducing the travel time from Chongqing's central urban area to Wanzhou to under one hour, thereby enhancing travel convenience for local residents and supporting economic and social development along the route [7].