PROJECTRailway tunnels

Railway tunnels

Railway tunnelsGreat Train Express (GTX) Suseo ~ Pyeongtaek (C9)
Category T / K Basic & Detailed design
Client Korea Rail (KR) Network Authority
Contractor GS E & C
Period March 22, 2010 ~ April 30, 2011
Project Information
    • Location
       Paengseong-eup, Pyeongtaek-si, Gyeonggi-do, Korea


    • Description
      • Total L = 4,519m     
      • Tunnel L = 2,380m
      • Cut and cover Box L = 750m      
      • Earthworks L = 389m                   


        • Technical Issues
          • Design of the tunnel considering the high speed train (design speed: 350km/h) in a single track line, the first case in Korea
          • Planning of girder supporting piles and grouting (surface and underground) for securing the stability of the electric power substation
          • Design of additional facilities to reduce the air pressure caused by running a high speed train in a single track tunnel