The longest distance in China and the largest section!Haitai Yangtze River Tunnel officially started

Concerning Point News On the morning of September 7, another world -class cross -crossing channel in the Jiangsu section of the Yangtze River, the Haitai Yangtze River Tunnel, officially started.

The Haipai Yangtze River Tunnel is the clear "Fourteenth Five -Year Plan" in the "Yangtze River Cross -River Channel Layout Plan". The road tunnel tunnel in the nation's first large diameter shield tunnel prefabricated assembly was called "the first tunnel of the Yangtze River". The riverside passage connects Suzhou Taicang City, Changshu City, and Haimen District of Nantong City. The route is about 39 kilometers in length and the construction period is 6 years.

The Haipai Yangtze River Tunnel has the characteristics of "long, large, tall, deep, and dangerous": "Long": Shield Tunnel is long, the total length of the tunnel is 11185 meters, and the shield section is 9315 meters; The outer diameter is 16.0 meters, and the excavation section exceeds 16.5 meters; "high": ultra -high water pressure, maximum water pressure reaches 0.75MPa; "Deep": deep soil, the maximum soil covering the tunnel in the middle of the river is 38 meters; "danger": complexity: complexity: complexity: complexity: complexity: complex Under strata conditions, long -distance, large diameter, and high water pressure excavation construction risk control requirements are high.

The Hai -Pacific Yangtze River Tunnel Highway is a key node from Tongzhou Bay to Changshu highway, about 8 kilometers from the upstream Sutong Bridge. The route starts from the intersection of about 2.7 kilometers east of the Shanghai -Shaanxi highway. It is about 5.5 kilometers east of Dongbu Hub on the Shanghai -Wudi Expressway, and the total length is 39.07 kilometers. Among them, the river tunnel is 11.185 kilometers long, the north wiring length is 15.724 kilometers, and the south wiring length is 12.161 kilometers. The project uses a two -way six -lane highway standard construction. From the south of Haimen to the Bixi interoperability, it contains the design speed of 100 kilometers per hour with the tunnel part of the river section and the design speed of the remaining road sections is 120 kilometers per hour. It is planned to be opened to traffic in the first half of 2028. After the project is completed, the traffic of the Sutong Yangtze River Bridge can be effectively diverted. Significant.

At present, there are eight cross -river channels in the Jiangsu section of the Yangtze River, including 4 cross -river bridge and 4 through the riverside tunnel. By the end of the "Fourteenth Five -Year Plan", the province will be built into six crossed river channels including Nanjing and Yanlu, Jianning West Road, Xianxin Road and Longtan, Changtai, Jiangyin Jingjiang. Jiang Xiangwang's counties (cities) have connected river channels.

Xinhua Daily · Jiaojiao Reporter Mei Jianfei Mentor Lin Shan

- END -