这个国庆中秋假期，位于张家港市张皋路附近的张靖皋长江大桥220千伏线路迁改工程现场一片热 火朝天的景象，150余名电力建设者有序地进行组立新塔、放线紧线等工作。 由于新、旧塔间安全距离不足，本次迁改需对涉及的220千伏万扬线双回、柏万线3回、阳万线1 回、阳柏线1回实施大范围停电作业，停电周期为9月29日至11月5日。根据规划，长假期间，供电部门 将率先对220千伏阳万线实施停电，在此期间完成10基铁塔的组立和放线工作。为最大限度降低停电对 用户的影响，国网张家港市供电公司提前与东华能源、梅塞尔气体等重点企业协调，将厂内设备检修计 划与停电窗口同步安排，确保供电服务"零中断"。"在停电施工前，我们完成了35千伏的转供电临时方 案，最大限度缩小影响范围，将方案做到技术最优、时间最短，以确保在有限的停电窗口期内顺利完成 施工节点任务。"该公司发展建设部主任罗杰介绍。 假日期间，电力建设者开启加班加点攻坚模式。10月1日上午10时许，在B6号塔施工现场，8名高 空作业人员正在50多米高的杆塔上进行最后一节塔材的安装。"吊臂再左移一点！""吊臂下不要站 人！"地面监护员徐洪根通过对讲机指挥。只见施工人员双腿悬空，骑跨 ...

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]