8月18日，由中铁十一局承建的西安至十堰高速铁路（简称"西十高铁"）汉江特大桥钢桁梁顺利合龙。 汉江特大桥位于湖北省十堰市，跨越丹江口水库库区，是西十高铁全线控制性工程，全长917.45米，主 跨420米。本次合龙的钢桁梁全长840米、宽11米、高9.4米，采用渐变三角桁式结构，最重桁节36.4吨。 西十高铁西起陕西西安，向东南穿越秦岭山脉，终点为湖北十堰，正线全长255.76公里，设计时速350 公里。西十高铁开通后，西安至十堰将实现1小时内到达，汉江特大桥钢桁梁的合龙为全线如期建成通 车奠定了基础。 新华社图文 图为8月18日拍摄的汉江特大桥（无人机照片）。 ...

27.3 the state 88 t and and s are the per 1 ale c 20 长江日报记者从中国铁路武汉局集团有限公司获悉，8月18日凌晨，西安至十堰高速铁路（简称"西十高铁"）汉江特大桥钢桁梁合龙， 标志着西十高铁全线桥隧工程主体工程完工，为全线如期建成通车奠定了坚实基础。 西十高铁西起陕西省西安市，向东南穿越秦岭山脉，经商洛市，终点至湖北省十堰市，新建正线长255.76公里，设计时速350公里。其 中湖北省境内86.36公里，桥隧占比为98.85％，地质条件复杂。 A The March 2017 sph child · 2011-50 - and and Tack Ist and 新浪 上一 STERNET MAN A -10 12 N phone / r 198 STORED th 00% 197 r # 6 F T 1 T 2 9 17 e 713 - 13-9 Ka 60 AMETY th 202 Car 2 Me l r 8 STERNET CALLED P /征 6 43 4 编制 D 6 01 汉江特大桥位于十堰市，跨越丹江口水库库区，是目前世界最大跨度梁桁组合结 ...

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]

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]