PROJECTRailway tunnels

Railway tunnels

Railway tunnelsAREX Connection Facility Expansion Construction
Category T / K Basic & Detailed design
Client Korea Rail (KR) Network Authority
Contractor Daelim Industrial
Period March 09, 2011 ~ June 30, 2011
Project Information
  • Location
    Yongsan-gu, Seoul ~ Goyang-si, Gyeonggi-do, Korea


  • Description
    • Total L = 2,197m
    • Tunnel L = 1,153m
    • U-type L = 269m
    • Bridge L = 340m
    • Earthworks L = 435m


  • Technical Issues
    • Design of the station extension connecting to existing AREX structure without hampering daily services
    • Selection of underpinning methods for connection passage underneath existing Station to minimize ground settlement
    • Planning of underground structures and construction methods for excavation underneath existing roads and railways