2-Arch Tunnel Having Emergency Pathway in Center-Support Structure and Its Constructing Method

摘要

A tunnel having an emergency pathway on a central support wall according to the present invention includes main line tunnels prepared on both sides; central support wall prepared between the main line tunnels; and an emergency pathway prepared on the central support wall along the length direction of the main line tunnel. The method for constructing the same includes a step for constructing a tunnel for building the emergency pathway; a step for building the central support wall prepared with the emergency pathway on the tunnel for building the emergency pathway; and a step for constructing the main line tunnels around the central support wall.