作为陕西"米"字形高铁网的重要组成部分，西十高铁建成通车后将串联关中平原与江汉平原，形 成"西安—十堰—武汉"高铁干线，对完善全国高速铁路网布局、带动沿线经济社会高质量发展具有重要 意义。（记者王优玲） 西十高铁线路西起陕西省西安市，终点为湖北省十堰市，新建正线全长255.7公里，设计时速为350 公里。其中，中铁十八局承建的秦岭马白山隧道全长22.9公里，是西十高铁最长双线单洞隧道。施工过 程中，建设团队通过优化施工组织、强化资源调配，投入专用轨排支撑架等，实现轨排毫米级微调，全 面满足350公里时速高铁运行标准。 近日，由中铁十八局负责施工的西十高铁最长双线单洞隧道——秦岭马白山隧道完成无砟轨道施 工，为后续铺轨、联调联试及如期通车奠定坚实基础。 【纠错】 【责任编辑:张樵苏】 ...

Group 1 - The completion of the Hanjiang Grand Bridge marks the finishing of the main bridge and tunnel works for the Xi'an to Shiyan high-speed railway, which is approximately 255.7 kilometers long and will reduce travel time from Xi'an to Wuhan from 5 hours to about 2.5 hours upon opening next year [1] - The expansion and renovation of the Jianbi Ship Lock on the Suzhou section of the Grand Canal will allow for a maximum annual cargo throughput of 170 million tons, which is 2.5 times that of the old lock, enabling 2,000-ton vessels to navigate the waterway [3] - The successful completion of the main bridge of the Fuhua Railway, which spans 142.5 kilometers, will reduce travel time from Fuyang to Huaibei from 2 hours to half an hour when it opens in 2026 [5] Group 2 - The Liaoyang irrigation district in Liaoning has been fully completed, providing irrigation for over 100,000 acres of farmland and increasing annual water-saving capacity by over 9 million cubic meters, which is an improvement of over 10% compared to before implementation [7] - The Dashi Gorge Water Conservancy Hub project in the Aksu region of Xinjiang, part of 172 major water-saving supply projects, is nearing 90% completion and is in the final stages of construction, with plans to store water by the end of September [7]

Core Viewpoint - The successful completion of the steel truss girder for the Hanjiang Grand Bridge marks a significant milestone in the construction of the Xi'an to Shiyan High-Speed Railway, which is expected to enhance transportation efficiency between Xi'an and Shiyan [1] Group 1: Project Details - The Hanjiang Grand Bridge, located in Shiyan City, Hubei Province, spans the Danjiangkou Reservoir area and is a key control project for the Xi'an to Shiyan High-Speed Railway [1] - The bridge has a total length of 917.45 meters, with a main span of 420 meters, and the completed steel truss girder measures 840 meters in length, 11 meters in width, and 9.4 meters in height [1] - The steel truss girder employs a gradient triangular truss structure, with the heaviest truss section weighing 36.4 tons [1] Group 2: Railway Specifications - The Xi'an to Shiyan High-Speed Railway stretches 255.76 kilometers from Xi'an in Shaanxi Province to Shiyan in Hubei Province, designed for a maximum speed of 350 kilometers per hour [1] - Once operational, the railway will reduce travel time between Xi'an and Shiyan to under one hour, facilitating faster connectivity in the region [1]

Core Viewpoint - The completion of the main bridge structure of the Xi'an to Shiyan High-Speed Railway (referred to as "Xi-Shi High-Speed Railway") marks a significant milestone, paving the way for the railway's timely completion and operation. Group 1: Project Overview - The Xi-Shi High-Speed Railway spans 255.76 kilometers, with a designed speed of 350 kilometers per hour, starting from Xi'an in Shaanxi Province and ending in Shiyan, Hubei Province [3]. - The railway's construction includes 86.36 kilometers within Hubei Province, with a bridge and tunnel ratio of 98.85%, indicating complex geological conditions [3]. Group 2: Bridge Details - The Hanjiang Grand Bridge, located in Shiyan City, is the world's largest span beam and truss combination structure for high-speed rail, with a total length of 917.45 meters and a main span of 420 meters [7]. - This bridge employs a new beam-truss combination structure, marking its first use in high-speed rail in China, effectively controlling temperature-induced deformation and ensuring uniform stiffness distribution [7]. Group 3: Construction Achievements - The construction of the steel truss beam, which is 840 meters long, faced significant challenges, including complex line control and limited lifting space [7]. - The project team overcame multiple technical challenges during the construction phase, which lasted 1259 days since the first pile was poured on March 8, 2022 [7]. Group 4: Future Implications - The Xi-Shi High-Speed Railway is expected to open in July 2026, providing a convenient high-speed rail connection between Xi'an and Wuhan, reducing travel time to under one hour from Xi'an to Shiyan and approximately 2.5 hours from Xi'an to Wuhan [11].

Core Viewpoint - The successful completion of the Hujia Yuan Tunnel marks a significant milestone in the construction of the Xitian High-speed Railway, indicating that all 42 tunnels along the line have been completed, thus accelerating the overall construction progress [1][3]. Group 1: Project Overview - The Xitian High-speed Railway has a total length of 255.7 kilometers, with the Shaanxi section measuring 169.4 kilometers and the Hubei section measuring 86.3 kilometers [3]. - The Hubei section includes 26.5 tunnels, with the Hujia Yuan Tunnel being the last to be completed [5]. Group 2: Construction Challenges - The project faces significant challenges due to poor surrounding rock conditions, shallow burial, and high construction risks, which require strict adherence to safety and quality standards [3][7]. - The construction team has implemented advanced support measures and utilized GIS visualization platforms to enhance process control and ensure safety during the construction [7]. Group 3: Economic and Connectivity Impact - The Xitian High-speed Railway is a crucial part of the national high-speed rail network, designed for a speed of 350 kilometers per hour, which will enhance connectivity between the Guanzhong urban agglomeration and the Yangtze River middle reaches [7]. - The railway is expected to open in June 2026, reducing travel time significantly between major cities, such as Wuhan to Xi'an in under 3 hours [10].

Core Viewpoint - The successful completion of the Hujia Yuan Tunnel marks the full breakthrough of all 42 tunnels of the Xishi High-speed Railway, laying the foundation for the comprehensive construction of ballastless tracks and the operation of the line [1][2] Group 1: Project Overview - The Xishi High-speed Railway has a total length of 255.7 kilometers, with the Shaanxi section measuring 169.4 kilometers and the Hubei section measuring 86.3 kilometers [1] - The Hubei section includes 26.5 tunnels, with a total length of 77 kilometers, accounting for 89% of the section [1] Group 2: Tunnel Details - The Hujia Yuan Tunnel, located in the Yuxi County of Shiyan City, is 4,456 meters long and has a maximum burial depth of approximately 200 meters [1] - It is the last tunnel to be completed in the Hubei section and is considered a key project due to its complex geological conditions, including the crossing of three fault zones and a high proportion (84.4%) of grade IV and V surrounding rock [1] Group 3: Construction Challenges and Solutions - The construction faced significant challenges such as high groundwater content and unstable geological conditions, with over 30% of the tunnel located in soft rock areas prone to deformation [1] - The construction unit adhered to principles of safety, quality, speed, environmental protection, and cost-effectiveness, employing advanced support measures like pre-injection grouting to ensure stability and control risks [2] - The use of GIS visualization platforms enhanced process management and allowed for dynamic adjustments to support parameters and excavation methods, ensuring safety during construction [2] Group 4: Strategic Importance - The Xishi High-speed Railway is a crucial component of the national railway network planning and the "13th Five-Year" development plan, designed for a speed of 350 kilometers per hour [2] - Once completed, it will enhance connectivity between the Guanzhong urban agglomeration and the Yangtze River midstream urban agglomeration, promoting socio-economic development along the route [2]

Core Points - The successful completion of the Tianzhushan No. 1 Tunnel marks a significant milestone in the construction of the Xi'an to Shiyan High-Speed Railway, with all tunnels in the Shaanxi section now fully connected [1][2] - The tunnel, measuring 14.7 kilometers in length and reaching a maximum depth of 690 meters, presents complex geological challenges, including fault zones and water inflow, making it a critical and high-risk project [2] - The construction of the Xi'an to Shiyan High-Speed Railway is progressing rapidly, with 15.5 tunnels completed, 99% of the roadbed and bridge works designed completed, and 35% of the ballastless track construction finished [2] Industry Impact - Once operational, the railway will reduce travel time from Xi'an to Shiyan to under one hour and from Xi'an to Wuhan to approximately 2.5 hours, enhancing connectivity between the Guanzhong urban agglomeration and the Yangtze River middle reaches [3] - The project is expected to significantly contribute to the economic and social development of the Qinba Mountain area and support rural revitalization along the railway line [3]

Core Points - The completion of the box girder erection task for the Xi'an to Shiyan high-speed railway marks a significant milestone, allowing the project to enter the bridge deck construction phase [1][3] Group 1: Project Overview - The Xi'an to Shiyan high-speed railway is a crucial part of Shaanxi's "米" shaped high-speed rail network, connecting Xi'an, Shangluo, and Shiyan, with a total new line length of 255.7 kilometers and a design speed of 350 kilometers per hour [2] - The Shaanxi section of the railway is 169 kilometers long and includes five stations: Xi'an East, Lantian, Shangluo West, Shanyang, and Manchuan Pass [2] Group 2: Construction Details - The only precast beam yard for the entire line is located in Lantian, covering an area of 153 acres and responsible for the prefabrication and erection of 698 box girders [2] - The box girder erection faced significant challenges, including multiple crossings over existing roads and high-voltage lines, resulting in high safety risks [2] - The project team implemented strict on-site monitoring and data recording to ensure the safe and orderly erection of the box girders [2] Group 3: Impact and Significance - Once operational, the Xi'an to Shiyan high-speed railway will reduce travel time from Xi'an to Shiyan to under one hour and cut the travel time from Xi'an to Wuhan from five hours to approximately 2.5 hours [2] - The railway will enhance the national high-speed rail network, improving connectivity between Shaanxi and regions such as the Yangtze River Delta and Pearl River Delta, and strengthening ties between the Guanzhong urban agglomeration and the central Yangtze River urban agglomeration [2]

Group 1 - The completion of the box girder prefabrication task for the Xi'an to Shiyan high-speed railway marks a significant milestone in the project, with a total of 698 box girders being prefabricated at the only precast yard located in Lintian County, Xi'an [2] - The Xi'an to Shiyan high-speed railway is a crucial part of Shaanxi's high-speed rail network, featuring a total length of 255.7 kilometers and a design speed of 350 kilometers per hour, with five stations along the route [2] - The successful use of the first set of hanging baskets for the construction of the Lanhhe Grand Bridge on the Xiangyu high-speed railway indicates a breakthrough in bridge construction, which is a key challenge in the project [3] Group 2 - The Lanhhe Grand Bridge spans 674.15 meters with a maximum span of 112 meters, featuring piers that exceed 40 meters in height, with the tallest pier reaching 97 meters [3] - The Xiangyu high-speed railway is an important component of China's high-speed rail network, expected to reduce travel time between Xi'an and Chongqing from approximately 6 hours to about 2.5 hours upon completion [3] - The construction of the Xi'an East Station, a major transportation hub, is progressing with the installation of the first box girder, which is part of a larger project that will significantly increase passenger capacity [4] Group 3 - The Xi'an East Station will cover a total area of 394,000 square meters and is expected to handle an annual passenger volume of 36.5 million, alleviating pressure on the Xi'an railway hub [4] - The construction of the Meitai Expressway is underway, with the road surface engineering starting, which is crucial for the completion of the entire expressway [4] - The Meitai Expressway, spanning approximately 75.4 kilometers, will enhance connectivity between the Guanzhong and southern Shaanxi regions, promoting high-quality regional economic development [5]