南珠高铁玉林北至岑溪东段隧道全部贯通

Core Viewpoint - The successful completion of the Tianxing No. 1 tunnel marks significant progress in the construction of the Nanzhu High-Speed Railway segment from Yulin North to Cengxi East, with all 22 tunnels in this section now fully connected, paving the way for subsequent track laying and construction work [1] Group 1: Project Details - The Tianxing No. 1 tunnel, located in Cengxi City, has a total length of 4,574.71 meters and a maximum burial depth of approximately 165 meters, facing complex geological conditions including rock deformation and structural collapse risks [1] - The construction team utilized advanced equipment such as a new generation of self-propelled hydraulic arch bridge, intelligent digital pouring lining vehicles, and ventilation systems to ensure quality and progress during the tunnel excavation [1] Group 2: Project Timeline and Impact - The main line of the Nanzhu High-Speed Railway from Yulin North to Cengxi East spans 84.759 kilometers and is currently in a comprehensive construction phase, with the "four electrical" systems and station building projects progressing in an orderly manner [1] - The ballastless track construction has commenced, with an expected completion and opening for traffic next year, which will significantly improve transportation conditions in the eastern Guangxi region and promote economic and social development along the route [1]