Group 1: Infrastructure Developments - The construction of the longest bridge under construction in the world, the Tongtaiyang Grand Bridge, has achieved a significant milestone with the successful closure of the cross-Yinjiang River cable-stayed bridge on July 1 [1][5] - The bridge spans 522.3 meters in total length, with a main span of 220 meters, and is the first cable-stayed bridge on the Tongtaiyang Grand Bridge to achieve closure [1][5] - The Shanghai-Chongqing-Chengdu high-speed railway, of which this bridge is a part, is a key national transportation corridor, covering approximately 2,100 kilometers across six provinces and cities, with a design speed of 350 kilometers per hour [5] Group 2: Transportation Enhancements - The Wuhu Longwan Yangtze River Tunnel, the first underwater tunnel in Anhui province, officially opened on July 1, significantly reducing travel time from the Jiangbei New District to Wuhu city center to just 5 minutes [6][10] - The tunnel, which is 6 kilometers long and designed for six lanes with a speed limit of 80 kilometers per hour, enhances cross-river transportation capacity and supports regional integration into the Yangtze River Delta [8][10] Group 3: Shipping and Logistics - The Three Gorges Hub reported a cargo throughput exceeding 80 million tons in the first half of the year, demonstrating the effective operation of its navigation structures [11] - The Three Gorges Ship Lock, which is the most complex inland ship lock in the world, has facilitated a cumulative cargo throughput of 2.24 billion tons since its opening in 2003, with an annual throughput consistently exceeding 100 million tons [14] Group 4: Renewable Energy Initiatives - The first unit of the Bala Hydropower Station, a key project in the western development initiative, was successfully connected to the grid on June 30, providing significant support for regional energy security [15] - The hydropower station, with a total installed capacity of 746,000 kilowatts, is expected to generate an average annual output of 2.553 billion kilowatt-hours, sufficient to meet the basic electricity needs of a city with a population of 1 million [15][19]

Core Viewpoint - The completion of the Wuhu Longwan Yangtze River Tunnel significantly enhances cross-river transportation capacity in Wuhu City and supports the economic development of the Anhui region and the integration of the Yangtze River Delta [1][2]. Group 1: Project Overview - The Wuhu Longwan Yangtze River Tunnel is the first underwater tunnel in Anhui Province, with a total length of 6 kilometers and designed as a dual six-lane urban expressway, allowing for a driving speed of 80 km/h [1]. - The construction utilized two large-diameter shield machines, "Wanjing Fendou" and "Wanjing Fuxing," to navigate through complex geological conditions, including over ten types of mixed strata [1]. Group 2: Technical Achievements - The project team developed over 20 key core technologies during construction, including optimizing excavation parameters and modifying the cutter head, which were crucial for successful tunneling under challenging conditions [1]. - The construction process was described as a "geological museum" due to the diverse geological challenges faced, making it one of the most complex and risky shield tunnel projects on the Yangtze River [1]. Group 3: Economic and Social Impact - The completion of the tunnel is expected to accelerate the development of the Wuhu Jiangbei New District and enhance the economic and social development of both banks of the Yangtze River in Anhui [2]. - The project contributes to the broader goal of integrating the Yangtze River Delta region, facilitating improved transportation and economic connectivity [2].

Core Viewpoint - The Wuhu Longwan Yangtze River Tunnel, the first underwater tunnel in Anhui Province, has been completed and opened to traffic, significantly reducing travel time across the river from 40 minutes to just 5 minutes [1][9]. Group 1: Project Overview - The tunnel is recognized as the "first tunnel of the 800-mile Wanjiang" and spans a total length of 6 kilometers, designed as a dual six-lane urban expressway with a speed limit of 80 km/h [6]. - The construction utilized a shield tunneling method for 4 kilometers, employing two large-diameter shield machines named "Wanjiang Fendou" and "Wanjiang Fuxing" [6]. - The project faced complex geological challenges, including over ten types of mixed strata, and successfully developed over 20 key technologies to address these issues [6]. Group 2: Safety and Monitoring - A "smart brain" integrated control platform was established within the tunnel, connecting 136 intelligent monitoring devices for real-time surveillance [7]. - An efficient fire protection system was implemented, featuring automatic activation and seamless integration with the command and dispatch system for rapid emergency response [7]. - Safety escape passages are provided every 60 meters, including conventional evacuation stairs and specially designed slides for the elderly and children [7]. Group 3: Economic and Regional Impact - The completion of the Wuhu Longwan Yangtze River Tunnel is expected to significantly enhance Wuhu's cross-river transportation capacity, facilitating regional development and integration into the Yangtze River Delta [9].

Group 1 - The Wuhu Longwan Yangtze River Tunnel has entered the commissioning phase, with plans to open in July [1][2] - The tunnel is designed as a dual-lane, six-lane urban expressway with a total length of approximately 6000 meters, featuring a design speed of 80 km/h [1] - The right tunnel is 3967 meters long, while the left tunnel measures 3958 meters [1] Group 2 - Completion of the tunnel will significantly reduce travel time from 40 minutes to just 5 minutes between the north and south banks of the Yangtze River [2] - The tunnel's construction is expected to enhance cross-river traffic efficiency and support Wuhu's development and integration into the Yangtze River Delta [2] - Key construction elements, including the main structure, decoration, and electromechanical installations, have been completed, with final adjustments underway [2]