Deep foundation pit excavation of jiangbei working well of "the first tunnel of wanjiang river" in south city of anhui province

Recently, "wanjiang the first tunnel" - jiangbei work tunnel project jiangbei deep pit excavation. This marks the first crossing tunnel on the 800li wanjiang river officially started construction, also means the city's fourth crossing channel officially started. "This tunnel across the river is the most difficult project of its kind at present. The length of shield tunnel (tunneling machine at the same time as the tunneling tunnel to lay supporting pieces) is up to 4 kilometers, including 1.8 kilometers of bedrock, the rock is very strong, which poses a lot of challenges for the construction."

As the first tunnel across the river in anhui province, the project adopts shield tunneling and open-cut construction. The jiangbei working well is 522.6 meters long and the maximum depth of excavation is 27 meters. Its excavation will lay a foundation for the next stage of tunnel shield tunneling, and the shield tunneling will be started by the end of this year. After the completion of the tunnel will greatly enhance the city's ability to cross the river, to wanjiang jiangbei new industrial concentration area of the construction and development of new opportunities it is reported that wuhu city south crossing the river tunnel is located in the Yangtze river wanjiang section of the great bend, north jiujiang district two ba zhen wei one road, under the Yangtze river, south yijiang district dachongshan road. With a total investment of 5.4 billion yuan, the project is designed as an urban expressway with a total length of 5.96km, six lanes in both directions, a design speed of 80km/h, and a total construction period of 60 months.

With the construction of the tunnel across the river in the south of the city, at present, wuhu has opened to traffic or under construction of a total of four river crossing channels, respectively, wuhu Yangtze river bridge, wuhu Yangtze river bridge, wuhu Yangtze river bridge and wuhu south tunnel.