• Location

Samdo-dong ~ Dado-myeon, Naju – si, Jeollanam-do

•  Description
• Total L = 17,994m(Down line based)
• 2 Tunnel (Gakdong-Tunnel L = 4,455m, Masan-Tunnel L = 360m)
• 1 Inclined Tunnel, L = 405m 

• Technical Issue              
• Installation of invert throughout the tunnel to prevent the bottom of the tunnel from rising
• Establishing the shortest inclined tunnel installation plan to minimize evacuation distance
• Establishment of comprehensive disaster prevention system plan including Safety Zone to improve disaster prevention performance
• Formulation of reinforcement retaining wall application plan to minimize environmental damage and ensure slope stability