Zhejiang: The first river-crossing tunnel in Fuchunjiang River Basin runs through. What's wrong with this project?

? The project is located on the rock wall at the mouth of Fuchun River, along the north and south ends of Fuchun River, in which the river-crossing tunnel is about 850 meters long. ? 165438+1On the afternoon of October 23rd, Hangshao Expressway (hereinafter referred to as? Huang Hang Expressway? The completion ceremony of Fuchunjiang Tunnel was held in Fuyang. Is this the first one between Fuyang and Hangzhou? Tunnel? This road is also the first river-crossing tunnel crossing the middle and upper reaches of Fuchun River in Huang Hang Expressway construction. Huang Hang Expressway is one of the main passages connecting Fuyang, Tonglu and Chun 'an in the main urban area of Hangzhou. The completion of this project is of great significance to improve the urban transportation network system in Hangzhou, which makes Hangzhou? Is Dongdaemun welcome? Twin cities? It is of great significance to build a new development pattern of linkage, urbanization and regional economic integration and accelerate the pace of Hangzhou's modern metropolis construction.

Fuchunjiang Tunnel is located at the mouth of Fuchunjiang River at the junction of Fuyang District and Yuhang District in Hangzhou, with a total length of1.430m.. The shield tunnel crosses the north and south ends of the river, of which the river-crossing tunnel is about 840 meters long, with a single hole and four lanes. The maximum buried depth of the tunnel is 48.4m, and the maximum buried depth of the tunnel is1260m. This is also the first expressway tunnel across the middle and upper reaches of Fuchun River in the middle and upper reaches of Huang Hang Expressway.

The total length of the tunnel crossing Fuchunjiang River is about14.2km, of which the Fuchunjiang River section is about 850m, of which the tunnel crossing the river is about 850m (not excavated) and the river bottom elevation is 59.5m.. The tunnel is located on the rock wall at the mouth of Fuchun River, which is sandwiched with river water. Therefore, the tunnel faces risks such as karst development, deformation, water inrush and safety during construction. At the same time, there are a series of difficulties in the construction of river-crossing tunnel, such as crossing the bottom stratum of Fuchun River and complicated hydrological data. After careful design and reasonable deployment, the builders have overcome various technical problems. ? Two tunnels? After the completion of the double holes? Two tunnels? How to connect? What are the difficulties encountered in the construction? Project manager Lu said:? Both tunnels are two-way six-lane design, and the transition section will be excavated after one end is connected. The total length of the tunnel is 757 meters, and it adopts two-way six-lane design standard and two-way eight-lane design.