西成客专陕西公司西康指挥部指挥长李战江介绍，截至目前西康高铁20座隧道已全部贯通，26座桥 梁主体已全部完成，406孔箱梁已全部架设，新建6座站房已完成设计总量的70%，西康高铁全线建设进 入加速度状态。 西康高铁建成通车后，西安至安康的铁路运行时间将由现在的3小时左右缩短至1小时以内，将大幅 缩短关中平原城市群与陕南秦巴山区的时空距离，对改善沿线地区客运服务水平、释放关中与陕南间的 运输需求、助力乡村振兴、促进地方经济发展等具有重要意义。 10月11日，随着首对500米长钢轨平稳精准铺设在西康高铁西安东站至牛背梁站区间的道床上，这 标志着西安至安康高铁正式进入全线铺轨阶段，为后期全线开通运营打下坚实基础。 西康高铁是国家"八纵八横"高铁通道中包（银）海通道、京昆通道的重要组成部分，高铁线路北起 西安市西安东站，向南穿越秦岭山脉，至终点安康市安康西站，新建正线全长约171公里，设计时速350 公里，桥隧比高达94%。此次铺轨任务自浐河特大桥向安康方向铺设，沿线跨越既有铁路、公路、河流 等，具有作业精度要求高、施工干扰大、铺轨工期紧张等特点。 ...

Core Viewpoint - The completion of the bridge installation for the Xi'an to Ankang high-speed railway marks a significant milestone, laying a solid foundation for subsequent ballastless track construction [1] Group 1: Project Overview - The Xi'an to Ankang high-speed railway is a crucial part of the national medium- and long-term railway network planning, specifically within the "eight vertical and eight horizontal" high-speed rail corridors [1] - The new railway line spans approximately 171 kilometers with a designed speed of 350 kilometers per hour [1] - The project includes six stations: Xi'an East, Taihe, Zhashui West, Zhen'an West, Tongmu, and Ankang West [1] Group 2: Impact on Travel Time - Once operational, the travel time from Xi'an to Ankang will be reduced from the current 3 hours to under 1 hour [1]

Core Viewpoint - The successful completion of the Qunling Jiutianshan Tunnel marks a significant milestone in the construction of the Xikang High-Speed Railway, with all 20 tunnels now completed and various other construction phases underway [1][2] Group 1: Construction Progress - The Xikang High-Speed Railway has completed all 20 tunnels, with bridge engineering at 89.7% completion, roadbed engineering at 77.5%, and ballastless track engineering at 16.2% [1] - Six new stations, including Xi'an East, Taihe, Zhashui West, Zhen'an West, Tongmu, and Ankang West, have commenced construction [1] Group 2: Technical Challenges - The Qunling Jiutianshan Tunnel, measuring 13.3 kilometers in length and located in a geologically complex area, is classified as a high-risk tunnel due to potential geological hazards such as rock bursts and karst formations [1][2] - The total length of the new main line is approximately 171 kilometers, with 20 tunnels totaling 141.913 kilometers and a bridge-tunnel total length of 161.310 kilometers, accounting for 94.41% of the line [2] Group 3: Economic Impact - Upon completion, the travel time from Xi'an to Ankang will be reduced from approximately 3 hours to under 1 hour, significantly enhancing passenger and freight transport services along the route [2] - The railway is a crucial part of the national medium- and long-term railway network plan, contributing to regional economic development and supporting rural revitalization efforts [2]

Core Viewpoint - The successful completion of the Qinling Jiutianshan Tunnel marks the full connectivity of all tunnels in the Xikang High-Speed Railway project, which is now progressing rapidly towards its expected completion in 2026 [1] Group 1: Project Overview - The Xikang High-Speed Railway connects Xi'an and Ankang and is a significant part of the national medium- and long-term railway network plan, specifically the "Eight Verticals and Eight Horizontals" high-speed rail corridor [1] - The railway is expected to reduce the travel time between Xi'an and Ankang from approximately 3 hours to under 1 hour upon completion [1]