The structure of Lianhuashan Tunnel is a separated double tunnel, which successively passes through Binhai Road, some venues of Dalian Forest Zoo, Baiyun Yanshui Lake District and Tongxiang Villa Residential Area, and is parallel to the existing Baiyun Tunnel. It is necessary to construct the tunnel with large cross section, shallow buried depth and bifurcation.
All the participants overcame many difficulties such as long construction period, high construction risk and high technical requirements, and fought for nearly 900 days and nights in the environment of strong noise, heavy dust and high humidity, ensuring the high-quality completion of the project.
Extended data
Lianhuashan Tunnel is the best.
difficulty
Lianhuashan Tunnel is the most complicated urban mountain tunnel in China.
The structural form is very complicated, including super-long span section, bifurcated pipe, interchange, small clear distance and other structures; Limited by the surrounding environment of the project, the tunnel passes through roads, buildings, existing tunnels and multiple air-raid shelters. Every feature mentioned above is a risk point of engineering construction. In the past, urban mountain tunnels often contained one or several risk points, but the major risk sources of Lianhuashan tunnel project were as many as 10.
length
Lianhuashan Tunnel is the longest urban mountain tunnel in China.
20 13, construction of lianhuashan tunnel in the south of Binhai avenue began. The project starts from the northeast road of Baiyun Tunnel in the north and reaches the cliff on the east side of Golden Beach in the south.
The bridge and tunnel construction project at the eastern end of southern Binhai Avenue is 3.88 kilometers long, including 3.0 kilometers of tunnel section and 880 meters of ground lead (including 275 meters of bridge widening section); The changchun road branch line is designed to be 1.34km long, in which the tunnel is 740m long and the ground wire is 602m long (including the newly-built bridge section of 35 1 m). Among them, the length of tunnel excavation has set a record for the mountain tunnel in the largest city in China.
reference data
Baidu Baike-Lianhuashan Tunnel