（来源：新华日报） 2月27日，张靖皋长江大桥南航道桥施工现场热火朝天，中交二航局的建设者们正有序进行施工作业。 作为国家"十四五"期间重点推动建设的过江通道项目，张靖皋长江大桥预计2028年10月基本建成，建成 后将极大地促进长三角区域一体化发展。施柏荣 摄 (视觉江苏网供图) ...

来源：环球网 芜湖泰山路长江大桥的建设，对贯彻落实长三角区域一体化发展与长江经济带建设国家战略具有重要意 义。大桥建成后，它将进一步优化长江干线过江通道布局，提升省际公路互联互通能力，有力推动芜湖 跨江融合与省域副中心城市建设。（图文视频：曹旭、方子楠） 近日，随着最后一方混凝土的顺利灌注，安徽芜湖泰山路长江大桥主航道桥南主墩30根大直径钻孔桩施 工全部完成，标志着大桥建设迈入新台阶。 南主墩作为主航道桥控制性工程，位于长江芜湖段，采用大直径群桩基础结构，由30根直径2.8米、桩 长81米的钻孔桩组成，布置方式融合行列式与梅花式特点。群桩施工累计浇筑水下混凝土约1.6万立方 米。项目开工以来，面对深厚粉砂层地质带来的塌孔风险、钻进效率低、成孔垂直度控制难等挑战，项 目团队精心策划、科学配置资源，采用旋挖钻机与液压反循环钻机接力成孔的组合工艺，并动态调整泥 浆指标，有效保障施工质量与效率，顺利完成南主墩全部钻孔桩施工，为汛期前实现南主墩承台施工节 点目标奠定了坚实基础。 芜湖泰山路长江大桥及接线工程是《长江干线过江通道布局规划（2020-2035年）》中的关键过江通 道，也是《安徽省交通运输"十四五"发展规划》 ...

Core Viewpoint - The development of the Yangtze River Economic Belt is a significant strategy aimed at ecological protection and high-quality economic growth, emphasizing the importance of prioritizing ecological restoration over development [2][6][7]. Group 1: Ecological Protection and Economic Growth - From January to November 2019, the proportion of good water quality in the Yangtze River Economic Belt reached 82.5%, exceeding the national average by 6.1 percentage points [3]. - The GDP growth rate of the 11 provinces and cities along the river in the first three quarters was 7.1%, 0.9 percentage points higher than the national average, with the economic total accounting for 44.5% of the national total [3]. - The implementation of a 10-year ban on commercial fishing in 332 natural reserves and fishery resource protection areas in the Yangtze River Basin began on January 1, 2020 [4]. Group 2: Legislative and Regulatory Framework - The draft of the "Yangtze River Protection Law" was submitted for review, marking a significant step towards comprehensive ecological protection in the Yangtze River Basin [4]. - The establishment of a problem account and monitoring mechanism for 163 ecological issues was initiated, with 115 issues rectified as of now [9]. Group 3: Infrastructure and Pollution Management - By mid-December 2019, the length of sewage collection networks in cities along the Yangtze River increased by 3,954 kilometers compared to the end of 2018 [10]. - A total of 579 tailings ponds have been closed, and 958 chemical enterprises have been relocated or transformed since 2019 [10]. Group 4: Community and Environmental Improvements - The ecological restoration of the Yangtze River's banks has improved the happiness and sense of gain among local residents, with significant water quality improvements noted in areas like the Dianchi Lake [11]. - The removal and consolidation of over 300 various docks in Wuhan have revealed long-hidden riverbanks, enhancing urban aesthetics [11]. Group 5: Strategic Development Initiatives - The release of the "Yangtze River Delta Regional Integration Development Plan" on December 1, 2019, represents a new national strategic blueprint [12]. - The Yangtze River Economic Belt is becoming a crucial growth engine for high-quality development, with initiatives to enhance industrial collaboration and innovation [13][16].

Core Insights - The construction of the Haitai Yangtze River Tunnel, undertaken by China Railway 14th Bureau, has achieved a significant milestone with the "Jianghai" shield machine surpassing 3,000 meters of excavation, completing nearly one-third of the total excavation task, marking a phase victory for the project [1] Group 1: Project Overview - The Haitai Yangtze River Tunnel stretches 39.07 kilometers, with an underwater section of 11.185 kilometers, making it the world's longest underwater highway shield tunnel [3] - The project faces challenges such as ultra-long distances, large diameters, high water pressure, deep burial, and complex working conditions, with a shield excavation diameter exceeding 16.6 meters and a maximum burial depth of 75 meters [3] Group 2: Technical Achievements - Since the start of excavation in April 2025, the project team has utilized their extensive experience in large shield tunnel construction, achieving a steady excavation rate of 16 meters per day and 480 meters per month at a depth of 52 meters [4] - The team has implemented a "Digital Shield Intelligent Control Center" for 24-hour monitoring of excavation parameters, grouting quality, and equipment status, leveraging big data for intelligent decision-making and precise construction [4] Group 3: Strategic Importance - The construction of the Haitai Yangtze River Tunnel is crucial for the integrated development of the Yangtze River Delta region and the national strategy for the Yangtze Economic Belt, optimizing the layout of river-crossing channels and promoting urban integration in the Yangtze River Delta [5] - The project is expected to be completed and opened to traffic by 2028, significantly reducing the travel time from Nantong to Suzhou and Shanghai from 1 hour to 10 minutes, thereby alleviating traffic pressure on the Sutong Yangtze River Bridge and accelerating the formation of the "1-hour economic circle" in the Yangtze River Delta [5]

Core Viewpoint - The Zhang Jinggao Yangtze River Bridge, currently under construction, is set to be the world's largest span bridge, significantly enhancing transportation efficiency and promoting regional integration in the Yangtze River Delta area. The associated 220 kV power line relocation project is crucial for the bridge's completion by 2028 [1][2]. Group 1: Project Overview - The Zhang Jinggao Yangtze River Bridge connects Zhangjiagang, Taizhou Jingjiang, and Nantong Rugao, marking a milestone in China's bridge engineering by surpassing a 2000-meter span [1]. - The power line relocation involves the construction of 36 new towers and the dismantling of 32 old towers to facilitate the elevated road construction [1]. Group 2: Operational Details - A large-scale power outage is scheduled from September 29 to November 5 to ensure safety during the relocation work, affecting multiple 220 kV lines [2]. - The State Grid Zhangjiagang Power Supply Company has coordinated with key enterprises to minimize the impact of the power outage, ensuring continuous power supply during critical operations [2]. Group 3: Construction Progress - During the holiday period, construction workers are working overtime to expedite the project, with significant progress made on the installation of the B6 tower, completed ahead of schedule [3]. - Workers are engaged in physically demanding tasks, often working over eight hours a day at heights, demonstrating commitment to meeting project deadlines [3].

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 Viewpoint - The Zhang Jinggao Yangtze River Bridge is a significant infrastructure project aimed at enhancing connectivity in the Yangtze River Delta region, showcasing advanced engineering and innovative technologies [1][5]. Group 1: Project Overview - The bridge, approximately 29.85 kilometers long, is a key project during China's 14th Five-Year Plan, expected to be completed by the end of 2028 [1]. - The construction of the bridge began with a groundbreaking ceremony on June 28, 2022, and the main engineering work commenced in October of the same year [1]. Group 2: Engineering Innovations - The bridge features six world records, including the longest span for a suspension bridge at 2,300 meters and the highest suspension bridge tower [2]. - Innovative technologies include a self-balancing cable force system, ultra-high-strength main cables, and a digital bridge concept that integrates smart monitoring and maintenance systems [2][4]. Group 3: Environmental Impact - The application of the self-balancing cable force technology is projected to save 15,700 cubic meters of concrete and 12,560 tons of steel, reducing carbon emissions by over 80,000 tons [2]. Group 4: Operational Safety - The bridge will utilize sensors to collect real-time data on environmental conditions and structural responses, aiding in scientific decision-making for its operation and maintenance [3]. Group 5: Strategic Importance - The bridge is a crucial initiative for the integrated development of the Yangtze River Delta and the Yangtze Economic Belt, aiming to become a model for transportation infrastructure and bridge technology innovation in China [5].

Core Viewpoint - The article discusses the collaborative water management efforts along the Tai Pu River, which connects Taihu Lake and the Huangpu River, emphasizing the importance of cross-regional cooperation among Jiangsu, Zhejiang, and Shanghai to improve the river's ecological environment [1][3]. Group 1: Background and Historical Context - The Tai Pu River, constructed from 1958 to 2006, serves as a crucial drainage channel and has evolved into an important waterway for industrial development [2]. - Historically, the river faced significant pollution due to industrial activities, necessitating a shift in focus towards ecological preservation and water quality improvement [2][5]. Group 2: Collaborative Governance - The establishment of a "Joint River Chief System" among the three regions has facilitated coordinated water management efforts, addressing challenges related to jurisdiction and responsibility [3][8]. - Monthly joint inspections by local river chiefs from Jiangsu, Zhejiang, and Shanghai have become routine, allowing for immediate problem-solving and enhanced communication [7][8]. Group 3: Environmental Improvements - Significant investments exceeding 20 billion yuan have been made in ecological restoration, including the removal of over 1,700 industrial enterprises and the restoration of 20 kilometers of public waterfront [5][6]. - The water quality of the Tai Pu River has improved, with monitoring indicating that the average water quality has consistently reached Class II standards for several years [9]. Group 4: Technological Integration - The implementation of the "Tai Pu River Cloud Manager" platform allows for real-time monitoring and data sharing among the three regions, enhancing the effectiveness of environmental protection efforts [9]. - Drones equipped with advanced imaging technology are utilized for regular inspections, contributing to proactive management of the river's ecological health [9]. Group 5: Community Impact - Local residents have reported noticeable improvements in the river's condition, reflecting the success of collaborative governance and environmental restoration efforts [10].

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 - The event held on April 28 focused on the implementation of the national two sessions spirit and the responsibility of economic provinces, with a total of 4.565 million online views [1] - The event featured an innovative "human-machine dialogue" with AI digital presenters "Xiao Bu" and "Xiao Gu," showcasing a new model of technology-enabled theoretical promotion [1] - Expert presentations included insights on "Yangtze River Delta regional integration development" and "Shanghai Jiao Tong University's support for high-quality development in Hai'an" [1] Group 2 - National representatives and local officials discussed development practices and shared experiences through case studies during the event [2] - Participants expressed a commitment to take on the responsibility of driving high-quality development and contributing to the overall development of the province and nation [2]