成渝中线高铁龙泉山隧道顺利贯通

Group 1 - The completion of the Longquan Mountain Tunnel marks a significant breakthrough in the construction of the Chengdu-Chongqing High-Speed Railway, laying a solid foundation for subsequent track laying and construction [1] - The tunnel construction faced multiple challenges, including complex geological conditions, high environmental requirements, and significant safety risks, making the technical difficulty one of the highest along the line [1] - The project team implemented an intelligent construction management system, enhancing the professionalism and precision of tunnel construction [1][2] Group 2 - The project utilizes advanced intelligent equipment and digital platforms, significantly improving construction efficiency and quality, with the full-computer three-arm rock drilling rig increasing drilling efficiency by over three times compared to traditional methods [2] - The team adopted a "three self-management" model, achieving a monthly progress of 137 meters per working face, and developed nine innovative construction techniques to address quality issues [2] - The Chengdu-Chongqing High-Speed Railway is a key part of the national "eight vertical and eight horizontal" high-speed rail network, which will optimize the transportation structure in the Chengdu-Chongqing area and shorten travel times [3]