How many kilometers is Lianhuashan Tunnel?
Lianhuashan Tunnel, with a maximum burial depth of 380 meters, connects Jianning County and Ninghua County. It is the project with the longest control mileage and the most complicated construction conditions in Pumei Railway. Shanwei City is located in the southeast coast of Guangdong Province, bordering Jieyang City and Huilai County in the east. It borders Huizhou City and Huidong County in the west.
The length of the tunnel from the starting point to the end point is 3 kilometers, which belongs to the extra-long tunnel; 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.
geographical position
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. It can be said that a large number of risk sources are concentrated, innovative design and meticulous construction management, and the project is successfully completed without any major safety accidents, which is the biggest feature of Lianhuashan Tunnel Project.
The starting point of the main line of the third bid section of Chuanshan Tunnel is the mountain on the north side of Baiyunshan Reservoir, in which two main line tunnels go north and then connect to the widened northeast road after passing through the north exit of Baiyunshan Tunnel; The two branches pass through the mountain on the west side of the Art Building eastward and then connect with the Northeast Road. Xu Huaizhong, the project manager of the bid section, said that the construction of the third bid section is very difficult, and the east-west main line passes through Tongxiang Mountain Villa Community.