转自：草原云 全长5145.91米的磴口黄河特大桥则开创了国内高铁桥梁建设的新纪录。这座特大桥首次采用超大型移 动模架与钢箱梁组合式新技术建设，被列为全线重难点控制性工程。面对黄河汛期高水位和大跨径重型 桥梁高空精确吊装的挑战，铁路建设者精心组织施工，按期实现了大桥的顺利合龙。 全长12095米的甘德尔山隧道是包银高铁全线最长的隧道，最大埋深约294.4米。这条隧道需要穿越17条 断层破碎带，地质条件极为复杂。 铁路建设者通过机械化作业、信息化施工和标准化管理"三大"手段，确保隧道内作业安全。他们创新采 用聚能光面爆破、复合掏槽技术及隧道温度场测试系统，将衬砌质量误差控制在严格可控范围内。 甘德尔山隧道工程紧邻秦汉古长城遗址。在隧道掘进过程中，铁路建设者科学配置炸药用量，精准控制 震动范围，有效保护了这片遗址，使秦汉古长城得以继续彰显长城文化的持久影响力。 生态优先，工程建设与保护的"双向奔赴" 12月23日上午，首条连接宁夏与内蒙古两个少数民族自治区的高铁线路——包银高铁包头至惠农段正式 开通运营。这条铁路将两地间的"千里之遥"变为"半日可达"，成为西北地区连接华北、东北的交通大动 脉和经济大通道。 包银高 ...

Group 1 - The Liu'an to Anqing Railway has completed the construction bidding results announcement, marking the project’s full entry into the construction phase [1] - The railway will connect Liu'an Station to Anqing West Station, covering a total length of 167 kilometers with six stations, including three new stations [1][2] - The total investment for the project is 24.4 billion yuan, with an estimated investment of 9.6 billion yuan in Liu'an [1] Group 2 - The railway will connect with several major railways, enhancing intercity connectivity in the southwestern Anhui region and promoting tourism and economic development [2] - China Railway Fourth Bureau and China Railway Twelfth Bureau will undertake the construction tasks within Liu'an, with plans to commence major construction work by the end of December 2025 [2]

Core Viewpoint - The successful topping of the main tower of the Zhangjiagang River cable-stayed bridge marks a significant milestone in the construction of the Nantong to Ningbo High-Speed Railway (Tong-Ning High-Speed Railway), laying a solid foundation for the subsequent completion of the entire bridge [1][2] Group 1: Project Overview - The main tower of the cable-stayed bridge, which is the first to be topped along the Tong-Ning High-Speed Railway, has a height of 49.25 meters and a total length of 417.7 meters [1] - The bridge design features a single-tower, double-cable prestressed concrete structure, with an H-shaped cross-section for the main tower and a prestressed concrete main beam [1] Group 2: Construction Achievements - The project team completed the entire construction process from pile foundation to tower topping in just 15 months, overcoming challenges such as tight schedules and complex structures [2] - Advanced technologies such as intelligent safety monitoring, 3D modeling, and millimeter-level positioning were employed to ensure construction safety, precision, and quality [2] Group 3: Future Steps - Following the topping of the main tower, the project will transition to the installation of cable stays and the cantilever pouring of the main beam, entering a critical phase of construction [2]

宜昌至常德高铁湖南段开工 中新社长沙12月26日电 (记者 鲁毅)湖北宜昌至湖南常德高速铁路(下称"宜常高铁")湖南段26日开工建 设。该线路是中国"八纵八横"高速铁路网中呼南通道的重要组成部分，将进一步完善中部地区铁路网结 构。 来源：中国新闻网 编辑：熊思怡 宜常高铁北起宜昌，南至常德，新建正线全长约185.741公里，其中湖南段长约98.466公里，设计时速 350公里，建设工期4年。湖南段将新建澧县、临澧东两座车站，并接入既有常益长高速铁路的常德站。 中新经纬版权所有，未经书面授权，任何单位及个人不得转载、摘编或以其它方式使用。 关注中新经纬微信公众号(微信搜索"中新经纬"或"jwview")，看更多精彩财经资讯。 线路穿越湘西北丘陵、河湖地带，桥隧比高达72%。宜常高铁北接沪渝蓉高速铁路、宜兴高速铁路，南 接黔张常铁路、常益长高速铁路。(完) 广告等商务合作，请点击这里 本文为转载内容，授权事宜请联系原著作权人 ...

11月17日，一列试验动车组抵达延安站。联调联试综合检测列车抵达延安站。新华社发（张黎芝 摄） 新华社西安12月26日电（记者李亚楠）26日上午，革命圣地延安的首条高铁——西延高铁开通运营。这条高铁自2021年5月开工建设，线路全 长299公里，设计时速350公里，将西安到延安的铁路运行时间缩短至约1小时。开行之际，记者跟随参建者代表一起乘坐体验，他们为记者解码了 这条高铁的五大亮点。 亮点一：穿越黄土高原设计时速最高的铁路 从西安到延安，高铁需要穿过渭河冲积平原区、黄土台塬区、子午岭低中山区及黄土梁峁沟壑区。"为快速识别不良地质，我们在国内首次应 用铁一院自主研发的'大场景'三维立体遥感及数字正射影像图解译技术，就像给土地做CT一样，仅铜川至延安段就解译出9000余处不良地质，10 条断裂带，准确率在98%以上。"中铁第一勘察设计院集团线运院副院长、西延高铁总设计师刘文涛说，这项技术在西延高铁前期初测阶段便得到 了应用，大幅提高了勘察效率和精准度。 黄土高原特有的湿陷性黄土，遇水后强度下降，会严重威胁高铁线路的平顺与安全。"我们采用防水、高强度桩基和复合地基等技术，犹如为 松软黄土植入'钢骨'，实现黄土由柔 ...

Core Viewpoint - The opening of the Wuyichang High-Speed Railway (Wuyichang HSR) marks a significant addition to the high-speed rail network in China, enhancing connectivity between Wuhan and Yichang and contributing to the development of the Yangtze River Economic Belt [1][10]. Group 1: Operational Details - The Wuyichang HSR officially commenced operations on December 26, with a total length of 314 kilometers and a design speed of 350 km/h [1]. - Initially, 29 pairs of trains will operate on the line, including 3 direct trains and 26 internal trains, with the fastest travel time from Hankou to Yichang being 69 minutes [4]. - The railway connects key regions, facilitating travel between Yichang and major cities such as Beijing, Shanghai, and Shenzhen, thereby enhancing regional integration [4]. Group 2: Infrastructure and Technology - The Wuyichang HSR is part of the "Eight Vertical and Eight Horizontal" high-speed rail network, which is crucial for optimizing the regional rail layout and improving transportation efficiency [10]. - The project has achieved several construction records, including the first dual-bridge synchronous rotation in China, showcasing advanced engineering techniques [12]. - The railway features a state-of-the-art intelligent traction power supply system capable of rapid fault diagnosis, ensuring stable operations [16]. Group 3: Future Prospects - Once the entire Shanghai-Chongqing-Chengdu high-speed rail line is completed, travel time from Shanghai to Chengdu is expected to be reduced to 6.7 hours, achieving a "half-day reach" [10]. - The Wuyichang HSR will significantly enhance the travel experience for passengers and support the high-quality development of the Yangtze River Economic Belt [10].

本报成都12月25日（记者王明峰）北京时间12月25日凌晨，由中国企业承建的格鲁吉亚现代化铁路项目 全线通车运营。作为跨里海国际运输走廊的重要组成部分，项目正式投运对提升格鲁吉亚铁路整体运 力、促进中国与欧洲物流运输和带动区域经济发展具有重大意义。 记者是从项目承建方中铁二十三局获悉的。该项目地处格鲁吉亚中部，连接泽斯塔波尼市与哈舒里市， 线路全长43.9公里，涵盖线路设计、土建施工、电力供应、通信系统、车站设施等多个关键领域，属综 合性大型基础设施工程。 项目沿线地质条件复杂，项目团队依托技术创新攻克系列技术难关，全程严守安全标准，确保项目稳步 推进。 建设期间项目部累计吸纳约1000名当地员工就业，帮助其提高收入的同时参与家乡发展。 ...

Core Viewpoint - The opening of the Baoyin High-Speed Railway marks a significant milestone for the city of Wuhai, ushering in a new era of high-speed rail travel and enhancing the city's integration into national development strategies [6][14]. Group 1: High-Speed Rail Impact - The Baoyin High-Speed Railway connects key regions, reducing travel time significantly; for example, the journey from Baotou to Yinchuan is shortened from 5 hours 58 minutes to 2 hours 38 minutes [8][9]. - The railway facilitates a new lifestyle, allowing for same-day business trips and spontaneous weekend getaways, thus enhancing the efficiency of travel for work, tourism, and family visits [9][10]. Group 2: Infrastructure Development - The Baoyin High-Speed Railway spans 519 kilometers with a design speed of 250 km/h, featuring significant engineering challenges, including the Gander Mountain Tunnel and the Wuhai Yellow River Bridge [11][12]. - The Wuhai Station, the largest new station on the line, has a modern design and serves as a regional transportation hub, expected to drive commercial and residential development in the area [13][14]. Group 3: Economic and Cultural Opportunities - The railway serves as a conduit for resource and talent flow, enhancing industrial upgrades and promoting regional economic collaboration between Inner Mongolia and Ningxia [14][15]. - Wuhai's unique cultural and natural attractions can be better accessed, promoting tourism and transforming transient visitors into long-term consumers, thereby boosting the local economy [15]. Group 4: Urban Development and Quality of Life - The opening of the railway is anticipated to elevate Wuhai's urban status, improving access to healthcare, education, and cultural resources from larger cities, thus enhancing the quality of life for residents [14][15]. - The local government aims to maximize the benefits of the high-speed rail by planning a high-speed rail economic zone, optimizing industrial layout, and improving service functions [15].

工人正在检查沿江高铁武宜段轨道平顺性。国铁集团/图 沪渝蓉沿江高速铁路武汉至宜昌段（以下简称"沿江高铁武宜段"）将于2025年12月26日开通运营，武汉至宜昌最快69分钟 可达，至此在江汉平原与鄂西地区间形成又一条快速客运通道。 沿江高铁武宜段建成通车后，最高时速按350公里运营。开通运营初期，铁路部门每日开行动车组列车最高达58列，汉口至 宜昌最快69分钟可达，较目前动车组列车经沪蓉高铁汉口至宜昌段压缩34分钟。为满足旅客不同出行需求，铁路部门在沿 江高铁武宜段实施灵活折扣、差异化的市场化票价机制。 中经记者路炳阳武汉报道 中铁第四勘察设计院集团有限公司（以下简称"铁四院"）钟祥汉江特大桥设计负责人王存国对《中国经营报》记者表示， 设计团队通过选择合理的桥梁结构形式，主梁工后徐变变形值控制至22.5毫米，攻克了大跨度混凝土斜拉桥工后徐变变形 控制标准严的难题。建立了桥梁线形同环境温度的变化关系，桥梁建造过程中动态调整主梁及轨面线形，实现高速行车对 无砟轨道平顺性的要求。 为保证桥梁和轨道安全服役状态，铁四院为钟祥汉江特大桥量身定做了桥轨一体化健康监测系统，成为守护超级工程的"电 子神探"。运维人员在智能管控 ...

Core Viewpoint - The Wuhan to Yichang section of the Shanghai-Chongqing-Chengdu High-Speed Railway will commence operations on December 26, enhancing the transportation network in the Yangtze River Economic Belt and promoting regional economic development [1][2]. Group 1: Project Overview - The Wuhan to Yichang section of the Shanghai-Chongqing-Chengdu High-Speed Railway spans 314 kilometers with a design speed of 350 kilometers per hour, significantly reducing travel time to 69 minutes between Wuhan and Yichang [1]. - The railway line connects key cities including Wuhan, Tianmen, Jingmen, and Yichang, and traverses complex geological conditions, including soft soil and fault zones [1]. Group 2: Construction and Engineering - Since its construction began in September 2021, the project has seen significant advancements, including the completion of major structures like the Zhongxiang Hanjiang Grand Bridge and the Baiguoshu No. 1 Tunnel [1]. - The Zhongxiang Hanjiang Grand Bridge, located in Jingmen, is notable for being the largest span concrete cable-stayed bridge for high-speed rail in China, with a main span of 270 meters [1]. Group 3: Strategic Importance - The Wuhan to Yichang section is a crucial part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, linking existing and under-construction rail lines, thereby enhancing connectivity in the region [2]. - The opening of this section will create a dual-channel high-speed rail system between Wuhan and Yichang, optimizing the regional rail network and facilitating travel for local residents [2].