西十高铁最长双线单洞隧道完成无砟轨道施工

Core Viewpoint - The completion of the ballastless track construction for the Qinling Ma Baishan Tunnel, the longest double-line single-hole tunnel of the Xi'an-Shiyan High-Speed Railway, lays a solid foundation for subsequent track laying, joint debugging, and timely operation [1] Group 1: Project Overview - The Xi'an-Shiyan High-Speed Railway starts from Xi'an, Shaanxi Province, and ends in Shiyan, Hubei Province, with a total length of 255.7 kilometers and a design speed of 350 kilometers per hour [1] - The Qinling Ma Baishan Tunnel, constructed by China Railway Eighteenth Bureau, is 22.9 kilometers long, making it the longest double-line single-hole tunnel of the Xi'an-Shiyan High-Speed Railway [1] Group 2: Construction Achievements - The construction team optimized the construction organization and strengthened resource allocation, utilizing specialized track support frames to achieve millimeter-level adjustments of the track [1] - The construction fully meets the operational standards for high-speed rail running at 350 kilometers per hour [1] Group 3: Economic and Social Impact - Upon completion, the Xi'an-Shiyan High-Speed Railway will connect the Guanzhong Plain and the Jianghan Plain, forming a high-speed rail trunk line from Xi'an to Shiyan and Wuhan [1] - The railway is significant for improving the layout of the national high-speed railway network and promoting high-quality economic and social development along the route [1]