新京报讯 据"中国雄安官网"微信公众号消息，6月18日0时33分，由中国铁路北京局集团有限公司（以 下简称：国铁北京局）代建的雄忻高铁雄保段保定东2×64米T构转体桥，经过37分钟缓缓旋转，精准跨 越繁忙的京广高铁，顺利完成转体，这标志着雄忻高铁雄保段项目建设取得重大进展，为雄忻高铁全线 贯通奠定坚实基础。 该转体桥位于河北省保定市莲池区，转体部分为一联2×64米预应力混凝土箱梁结构，总重量达8761 吨，转体段长度129.5米，转角总计达到39°，是雄忻高铁的重点控制性工程。 据国铁北京局站房工程项目管理部副主任张乃明介绍，转体桥的建设面临着诸多挑战，京广高铁线作为 我国最重要的高速铁路干线之一，列车运行密度极高，施工必须在深夜高铁停运后的时间段完成，对作 业效率和安全保障是极大的考验。同时，桥体与高铁线路的相对空间位置关系非常复杂，转体过程中， 对精度的要求极高，任何细微偏差都可能对高铁运营安全造成影响。 为顺利完成此次桥梁转体施工，项目团队联合国内顶尖桥梁专家开展技术攻关，创新提出取消传统边跨 直线段，采取"无过渡结构"转体方案，使原本需分阶段实施的转体工序，压缩为一次性精准对接，无需 再浇筑过渡段，避 ...

6月16日，记者从中铁隧道局集团雄忻高铁2标项目部了解到，国家"八纵八横"高速铁路网京昆通道的关 键控制性工程——雄忻高铁五台山隧道正洞开挖已突破10000米大关，完成全隧总长14097.73米的 71%，为后续实现全隧贯通奠定了坚实基础。作为雄忻高铁山西段的"咽喉"工程，五台山隧道地质条件 极其复杂，地下水丰富，需穿越岩溶、多处断层破碎带，正洞Ⅳ级、V级围岩合计8502米，占比 60.3%，施工难度大、安全风险高。据中铁隧道局雄忻高铁2标项目部负责人介绍，施工团队运用多源 协同综合预报技术，全面掌握前方地质情况，强化危险源辨识；同时结合五台山隧道Ⅳ级围岩为主的特 点，研制出国内首台格栅拱架自动化生产线，实现了原材料自动上料、主筋自动对焊续接、八字筋一体 化加工成型、蝴蝶筋自动组焊、主筋和蝴蝶筋自动组拼焊接、拱架自动定尺切割等功能，与传统方式相 比，每班组人员配置由11人减至5人，人均生产效率大幅提高。(央视新闻) ...

Core Points - The successful completion of the Dongye Tunnel marks a significant milestone in the construction of the Xiongxin High-Speed Railway, which is an important part of China's high-speed rail network [1][2] - The project is expected to enhance Shanxi Province's integration into the Beijing-Tianjin-Hebei collaborative development strategy and promote high-quality regional economic and social development [2] Construction Details - The Dongye Tunnel, with a length of 4,320 meters and a maximum depth of 177.36 meters, is the first tunnel over 4,000 meters to be completed in the Xiongxin High-Speed Railway [1] - The project faced significant challenges due to the geological conditions, including 86% of the surrounding rock being classified as level IV and V, and the presence of multiple fault zones [1][2] - Innovative construction methods such as the "five vehicles and one bridge" technique were employed to optimize processes and improve efficiency [2] Safety and Technology - The project emphasized safety management and utilized advanced technologies like 3D tunnel scanning and various geological detection methods to ensure construction safety [2] - The use of automated production lines for tunnel arch frames and steel grids significantly increased the precision and efficiency of prefabricated components [2] - Real-time monitoring systems were implemented to track surrounding rock deformation and enhance support measures during construction [2]

Group 1: Subway Construction and Operations - Wang Yandong, a shield driver, has been working in subway construction since 2015, operating in various cities across China, including Beijing, where he is currently involved in the construction of Line 22 [3][4] - The construction of the Beijing Subway Line 22 spans approximately 81.82 kilometers and connects key areas such as the CBD core, urban sub-center, and neighboring regions, enhancing connectivity and urban development [4] - The shield tunneling operation is continuous, requiring drivers to monitor various parameters and coordinate with over sixty personnel on the surface [3][4] Group 2: Xiong'an New Area and High-Speed Rail - The Xiong'an Intercity Station is under construction in the Xiong'an New Area, designed as a fully underground station with a total building area of 173,000 square meters [7][8] - The station will feature four platforms and six tracks, integrating with the urban development of Xiong'an and serving as a key transportation hub for travelers [7][8] - Advanced construction technologies, including drones and automated systems, are being utilized to ensure quality and efficiency in the project [8] Group 3: River Management and Ecological Restoration - The Yongding River improvement project aims to enhance flood control capabilities and restore ecological balance along a 73-kilometer stretch, addressing damages caused by flooding [11][12] - The project includes the reconstruction of damaged water facilities and the implementation of protective measures for nearby villages, contributing to the overall health of the river ecosystem [11][12] - The successful restoration of the Yongding River has led to increased tourism and local economic development, showcasing the benefits of ecological management [12] Group 4: Forest Conservation Efforts - The Zhangjiakou Xuanhua Forest Farm, managed by Yang Fugui, covers 118,000 acres with a 97% vegetation coverage rate, demonstrating significant reforestation efforts over 24 years [15][16] - Advanced monitoring technologies, including drones and surveillance cameras, have been implemented to enhance forest protection and fire prevention measures [17] - Yang Fugui emphasizes the importance of hands-on management and regular inspections to ensure the health and growth of the forest [17]

"五一"假期，多地铁路工程建设不停工。建设者们坚守岗位、干劲十足，抢抓施工进度，确保工程建设优质高效推进。 在甘肃，由中铁十六局参建的天陇铁路白杨里隧道掘进进入最后冲刺阶段。白杨里隧道正洞全长约6.1公里，穿越砂岩、粉砂质泥岩等复杂地层， 围岩破碎，部分地段涌水量大。天陇铁路是连接甘肃省天水市与陇南市之间的快速铁路干线，也是甘肃省"十四五"铁路发展规划重点项目，正线 全长约208公里，建成通车后将成为陇东南至川渝地区新的客货运输便捷通道。 在山东，由中铁二十一局参建的津潍高铁滨东黄河特大桥工地上，900吨级提梁机、运梁车和架桥机在建设者指挥下协同作业，进行大桥箱梁架 设。滨东黄河特大桥全长超过42公里，是津潍高铁的控制性工程。天津至潍坊高速铁路是我国"八纵八横"高铁网的重要组成部分，正线全长约348 公里，建成通车后将进一步完善环渤海地区路网结构，促进津冀两地与山东的互联互通。 在河北，雄忻高铁卞家峪村1号大桥施工现场，中铁十八局建设者正在加速推进雄忻四标剩余184孔箱梁铺设。截至目前，雄忻高铁河北段已完成 箱梁架设超1700孔，完成总架梁任务的70%。雄忻高铁是雄安新区"四纵两横"区域高铁网的重要横向通道， ...