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Zhongnanshan Highway Tunnel

Zhongnanshan tunnel is the key project on Baotou-Maoming highway and an important part of Xi'an-Ankang highway, with single tube of 18.02 km long. It is the largest highway project both at home and aboard. During its construction, builders have overcome a series of difficulties, including fault, water inflow, rock burst, etc. in construction state and ventilation, fire, monitoring, etc. in operation stage. And the tunnel was opened to traffic on January 20, 2007.

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