金秋双节相逢，举国同庆、万家团圆。在各地的交通工程建设工地上，却是一片紧张繁忙的景象： 塔吊林立、焊花飞溅、机械轰鸣，建设者们坚守岗位，用实干描绘出节日里最质朴的风景。 用心建设，用坚守诠释责任 在江西瑞梅铁路白狮丘特大桥施工现场，作业人员各司其职，安装模板、截断钢筋、绑扎网格…… 作为标段内最后一座连续梁，该桥合龙是后续架梁铺轨的关键。 假期里，中铁二十五局1200余名建设者坚守岗位，56个工作面同步推进。"00后"技术员陈锦博俯身 仔细检查钢筋绑扎的间距、型号与规格，这是他毕业后参与的首个重大工程。 在广西武鸣，中建交通参建的广西林宁高速三标项目工地上，415名施工人员与41台冲击钻、45台 挖掘机、5台压路机正紧锣密鼓地推进多专业同步施工。 项目部严格落实安全生产责任制，备足施工物资，优化各工序衔接，全力冲刺年度建设目标。"工 期紧，任务重，我们能为早日打通道路、改善居民出行出份力，这个国庆节过得特别有意义。"项目总 工杨钢锋的话语道出了所有建设者的心声。 每天，他穿梭于钢筋水泥之间，负责现场管理、技术交底与工序验收，手里施工日志上密密麻麻记 录着各种关键数据。"这座桥的每一根钢筋都烙印着我的青春，希望 ...

新华财经上海10月2日电 过江通道"行路难"，又一次成为"黄金周"出行无法绕过的话题。作为长三角北 翼的核心过江通道，也是预测流量最大的过江通道，苏通大桥的拥堵现象具有区域代表性。10月2日， 南通交警的统计数据显示，10月1日苏通大桥实测的实时过江流量为近15.7辆，较预计值高出0.9万辆左 右，也高于去年同期的14.7万辆。 2024年，长三角已建和在建高铁覆盖了区域内所有设区市，宣告"轨道上的长三角"实现新突破；2025年 9月，常泰长江大桥正式通车后，江苏建成的过江通道则已增至20座。交通网络越织越密，为何过江通 道节假日仍难逃"添堵"困境？ 江苏过江流量日均预测值（图片来源："南通交警"公众号） 汽车保有量飙升，致过江通道超设计流量运营 自驾已成为假期出行的绝对主力。交通运输部在9月28日的国务院新闻办发布会上指出，本次中秋国庆 假期，自驾占出行总量的八成左右。新华财经针对"黄金周"自驾过江的需求展开探询，多位受访者表 示，"便捷性"是选择驾车出行的首要考量。 可见，过江通道原有通行能力逐渐难以适配激增的车流，正是出现频繁拥堵的核心原因。 功能性主导地位难替代，亟待平行通道分流 "不少过江通道的'不 ...

Core Viewpoint - The successful progress of the Jiangtai Yangtze River Tunnel and the North Yangtze River High-speed Railway projects highlights the effective integration of party-building initiatives into major infrastructure projects, enhancing construction efficiency and safety [1][2][3] Group 1: Project Achievements - The Jiangtai Yangtze River Tunnel has officially entered the critical phase of underwater excavation, marking a significant milestone as the world's longest underwater shield tunnel [1] - The North Yangtze River High-speed Railway has successfully completed the placement of the last 700-ton prefabricated box girder, showcasing the project's advancement [1] Group 2: Party-Building Initiatives - The implementation of a "five-party entry" party-building model has strengthened the organizational foundation at key projects, integrating party organizations into construction sites [1] - Regular activities such as "Project Classroom" have been established to disseminate party policies and theories to over 500 party members on-site [1] Group 3: Safety and Efficiency Measures - The establishment of 78 "Party Safety Pioneer Posts" has enhanced safety oversight, with party members taking the lead in ensuring safety and quality responsibilities [2] - A "Chief Service Officer" mechanism has been introduced, resulting in the completion of nearly 94% of housing relocation agreements within one month for the North Yangtze River High-speed Railway project [3] Group 4: Community and Worker Support - Over 80 supportive activities have been conducted to address the needs of frontline workers, enhancing their sense of belonging and security [3] - The integration of party-building efforts into project management has been recognized as a key factor in accelerating transportation infrastructure development in Haimen [3]

经济观察网据央视新闻消息，江苏省近年来加快推进水陆空基础设施建设，多个标志性"超级工程"展现 了江苏速度。在长江泰州和常州段，常泰长江大桥自2019年开建，预计2025年完工，将大幅缩短两地通 行时间。另外，张靖皋长江大桥和海太长江隧道也在建设中，后者是世界最长公路水下盾构隧道。这些 工程为沿江两岸群众出行提供便利，推动了跨江城市群的融合与长三角一体化进程。目前江苏已建成20 条过江通道，多个项目正在推进中，助力区域经济高质量发展。 ...

Core Points - The "Cangyuan" shield machine, developed by China Communications Tunnel Bureau, has commenced its excavation phase for the Haitaichangjiang Tunnel A4 project, marking a significant advancement in high-end tunnel construction equipment in China [1] - The Haitaichangjiang Tunnel spans 39.07 kilometers, connecting Haimen District in Nantong City to Taicang City in Suzhou, and is designed to alleviate traffic flow from the Sutong Yangtze River Bridge [1] - The "Cangyuan" shield machine features a diameter of 16.66 meters, a total length of 176 meters, and weighs over 5,650 tons, making it the largest slurry balance shield machine independently developed in China [1] - The project integrates three core technologies, including a "digital brain" for intelligent control, "smart blade teeth" technology for efficient excavation, and a globally innovative "smart heart" active protection system [1] - The Haitaichangjiang Tunnel is a key project in the "Yangtze River Main Line Cross-River Channel Layout Plan (2020-2035)," aimed at enhancing cross-river transportation capabilities and promoting the integration of urban clusters along the river [1]

Core Points - The article discusses the commencement of the excavation phase for the Hai-Tai Yangtze Tunnel project, which is being constructed by China Communications Construction Company (CCCC) [1] - The tunnel spans 39.07 kilometers across the Yangtze River estuary, connecting Haimen District in Nantong City to Taicang City in Suzhou [1] - The "Cangyuan" shield machine, with a diameter of 16.66 meters and a total length of 176 meters, is the largest slurry balance shield machine independently developed in China, marking a significant breakthrough in high-end tunnel construction equipment [1] Technology and Innovation - The "Cangyuan" shield machine integrates three core technologies to address the challenges of ultra-long distance, large diameter, high water pressure, and deep burial [1] - It features a "digital brain" for intelligent control, "smart blade technology" to overcome efficient excavation bottlenecks, and the world's first "smart heart" active protection system [1] - The collaborative application of these innovative technologies provides dynamic safety assurance for the complex working conditions of the tunnel [1] Project Significance - The Hai-Tai Yangtze Tunnel is a key project in the "Yangtze River Mainline Cross-River Channel Layout Plan (2020-2035)" and is referred to as the "First Tunnel of the Yangtze River" [1] - Upon completion, the project will effectively divert traffic from the Sutong Yangtze River Bridge, optimize the layout of cross-river channels, and enhance the transportation support capacity and service level across the river [1] - The tunnel is expected to promote the integrated development of urban agglomerations along the Yangtze River [1]

Core Viewpoint - The commencement of the "Cangyuan" shield machine marks the start of the left line excavation for the Haitai Yangtze River Tunnel, entering the dual-line tunneling phase, which is a significant milestone for the project [2][4]. Project Overview - The Haitai Yangtze River Tunnel spans a total length of 39.07 kilometers, with the left line shield tunnel measuring 9,327 meters, designed to accommodate a six-lane expressway with a speed limit of 100 kilometers per hour [2][4]. - The project connects Haimen District in Nantong City to Taicang City in Suzhou, strategically located at the Yangtze River estuary [2][4]. Technical Specifications - The "Cangyuan" shield machine has a maximum excavation diameter of 16.66 meters, a total length of 176 meters, and weighs over 5,650 tons, making it the largest independently developed earth pressure balance shield machine in China [4]. - The right line of the tunnel began excavation on April 9 of this year and has progressed 1,300 meters [4]. Strategic Importance - The Haitai Yangtze River Tunnel is a key project in the "Yangtze River Main Line Crossing Channel Layout Plan (2020-2035)" and is prioritized in Jiangsu's "14th Five-Year Plan" for cross-river transportation [4]. - The completion of the project is expected to significantly contribute to the integration of the Yangtze River Delta region and the development of the Yangtze Economic Belt, enhancing the layout of crossing channels along the Yangtze River [4].

Core Insights - The successful installation of the cutter head for the "Cangyuan" shield machine marks a significant milestone in the construction of the Haitai Yangtze River Tunnel, which is the world's longest underwater road tunnel [1][2] - The Haitai Yangtze River Tunnel is a key project in China's strategic plan for the Yangtze River Economic Belt and is expected to be completed by 2028, enhancing transportation capacity and supporting regional integration [2] Group 1 - The "Cangyuan" shield machine has a cutting diameter of 16.66 meters and a total length of 176 meters, weighing over 5,650 tons, setting a new record for domestically produced large-diameter shield machines [1] - The cutter head, which is the core component of the "Cangyuan" machine, consists of one central block and six edge blocks, equipped with 365 cutting tools designed for complex geological conditions [1] - The tunnel project spans 39.07 kilometers, with a shield tunnel length of 9,327 meters, a maximum water pressure of 0.75 MPa, and a maximum burial depth of approximately 75 meters [1] Group 2 - The combination of soft soil cutter head with gradient distribution alloy tools forms a "super hard dragon tooth matrix," significantly improving excavation efficiency in quartz sand layers with about 65% content [2] - The Haitai Yangtze River Tunnel is part of the "Yangtze River Main Line Cross-River Channel Layout Plan (2020-2035)" and is a priority project for Jiangsu's 14th Five-Year Plan [2] - Upon completion, the tunnel will effectively divert traffic from the Sutong Yangtze River Bridge, contributing to the integrated development of the Yangtze River Delta region [2]

Group 1: Infrastructure Investment - In the first quarter, Jiangsu province completed a total transportation fixed asset investment of 564.3 billion yuan, representing a year-on-year increase of 5.8%, which accounts for 24.5% of the annual investment plan, marking the highest level for the same period in history [1] - The Changtai Yangtze River Bridge, a major project, completed an investment of 1.1 billion yuan in the first quarter, which is 60% of its annual investment plan [2] - The Zhangjinggao Yangtze River Bridge achieved an investment of 7.34 million yuan in the first quarter, with construction progressing rapidly through technological innovation [3] Group 2: Tunnel and Bridge Construction - The Jiangyin-Jingjiang Yangtze River Tunnel, currently the highest water pressure shield tunnel in China, completed its shield tunneling and is advancing with the construction of the main structure [3] - The Haitai Yangtze River Tunnel is progressing with the right line shield machine completing 81 rings of advancement, while the left line assembly is 40% complete [3] - The expansion of the Jiangsu highway network is underway, with significant progress in the Changshen, Huwu, Xiyi, and Yangli highways, with over 10 billion yuan invested in the first quarter [4][5] Group 3: Railway Development - The North Jiangsu High-Speed Railway construction is progressing, with the main tower of the bridge surpassing 100 meters in height [6] - The Nanjing metropolitan area intercity railway construction is also advancing, with various structural components nearing completion [6] - In the first quarter, the railway projects in Jiangsu achieved multiple milestones, with the Nanjing-Huai'an intercity railway and the North Jiangsu High-Speed Railway showing significant progress [7]

Core Insights - The construction of major engineering projects continues during the "May Day" holiday, with significant progress being made in various regions [1] Group 1: Jiangsu - Haitai Yangtze River Tunnel - The Haitai Yangtze River Tunnel, spanning 11.185 kilometers, is the longest underwater road tunnel in the world, currently progressing with a shield tunneling machine named "Jianghai" [1][2] - As of now, the "Jianghai" shield machine has advanced 200 meters at a rate of 10 meters per day, utilizing advanced technology for efficient operation [1][2] - The tunnel features a unique rescue vehicle passage for emergency situations, designed to enhance safety and efficiency, with an expected completion date in 2028 [2] Group 2: Jiangxi - Changjiang Navigation Channel Improvement Project - The Changjiang Navigation Channel improvement project in Jiangxi is actively progressing, with over a hundred workers on-site during the holiday [3] - The project, which started in October 2024 and is expected to be completed by the end of 2028, aims to enhance the annual cargo throughput capacity to 15 million tons [3][4] - Innovative management and technology have led to significant cost savings of over 100 million yuan and a three-month reduction in the project timeline [4][5] Group 3: Safety and Technological Innovations - The Changjiang Navigation Channel project employs advanced monitoring systems, including 22 4K cameras, to ensure safety and effective risk management [4][5] - The integration of smart management and technological innovations is transforming construction practices, enhancing efficiency and safety [5]