"当前和今后相当长一个时期，要把修复长江生态环境摆在压倒性位置，共抓大保护，不搞大开发。" 2016年1月5日，习近平总书记在重庆召开推动长江经济带发展座谈会，中华民族母亲河开启发展新征程。 转眼四年。大江奔流，一如千年，却已焕发新颜。 习近平总书记指出："新形势下，推动长江经济带发展，关键是要正确把握整体推进和重点突破、生态环境保护和 经济发展、总体谋划和久久为功、破除旧动能和培育新动能、自身发展和协同发展等关系""使长江经济带成为引领我 国经济高质量发展的生力军"。 2019年1月至11月，长江经济带优良水质比例达82.5%，优于全国平均水平6.1个百分点；前三季度沿江11省市地区 生产总值同比增长7.1%，高于全国增速0.9个百分点，经济总量占全国44.5%，比重持续提升。长江经济带正成长为引 领我国经济高质量发展的生力军。 "共抓大保护，不搞大开发"深入人心 2020年1月1日零时起，长江流域332个自然保护区和水产种质资源保护区全面禁止生产性捕捞。长江流域各地重点 水域也将相继进入为期10年的常年禁捕期。 更深刻的变化即将发生。不久前，《中华人民共和国长江保护法（草案）》首次提请十三届全国人大常委会 ...

海太长江隧道北起南通海门、南至苏州太仓，线路全长39.07公里，过江隧道长11.185公里，其中盾构段长9315米，采用双向六车道高速公路设计标准，是 目前世界最长的公路水下盾构隧道。工程面临"超长距离、超大直径、超高水压、超大埋深、复杂工况"等挑战，盾构开挖直径超16.6米，最大埋深达75 米，最高水压7.5巴，沿线需穿越淤泥质粉质黏土与粉细砂等复合地层，技术难度与施工风险高。 自2025年4月盾构始发掘进以来，中铁十四局海太长江隧道项目团队依托丰富的穿江越海大盾构隧道施工经验和技术积累，驾驶着"江海号"盾构机依次安 全穿越立新河、江北大堤、新通海沙围堤，顺利进入长江水域。目前，"江海号"正以日均16米、月均480米的速度，在江底52米深处稳健掘进。 据悉，海太长江隧道工程的建设对落实长三角区域一体化发展和长江经济带发展国家战略，优化长江干线过江通道布局，推进扬子江城市群建设和跨江融 合发展有着重要意义。工程计划于2028年建成通车，届时，南通至苏州、上海的跨江通行时间将从1小时缩短至10分钟，有效疏解苏通长江大桥交通压 力，助力长三角"1小时经济圈"加速成型。 施工过程中，项目团队创新运用"数字盾构智慧管 ...

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]

Group 1 - Multiple major engineering projects in China are accelerating, contributing to high-quality development [3] - The Xingtong 200,000 kW wind power project in Inner Mongolia has achieved full-capacity grid connection, generating 560 million kWh of clean energy annually, enough to power approximately 670,000 people for a year [6] - The Shantou Bay underwater tunnel of the Shanshan High-speed Railway has successfully completed its construction, with a total length of 9,781 meters, significantly increasing train capacity from 24 pairs to over 50 pairs daily [8] Group 2 - The "Jiaolong" manned submersible has completed its first sea trial after technical upgrades, achieving a record number of descents with four descents in one day, validating key technical performance indicators [10] - The domestically developed shield machine "Cangyuan" has been launched in Jiangsu, set to undertake the underwater shield tunnel project of the longest highway, with a diameter of 16.66 meters and a domestic technology localization rate exceeding 98% [12] - The Haitaichangjiang Tunnel will effectively alleviate traffic on the Sutong Yangtze River Bridge, playing a significant role in the integrated development of the Yangtze River Delta region and the national strategy for the Yangtze River Economic Belt [13]