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].