PROJECTRailway tunnels

Railway tunnels

Railway tunnelsGangneung~Jejin Single Track Railway(C1)
Category T/K Basic & Detailed design
Client Korea Rail (KR) Network Authority
Contractor Kyeryong construction industial
Period April 16, 2021 ~ October 31, 2022
Project Information
  • Location

 Bagwol-dong ~ Gyo-dong, Gangneung-si, Gangwon-do

  •  Description
    • Total L = 7,412m
    • Tunnel L = 3,096m(Shield TBM Tunnel L = 2,654m, Station Tunnel L = 442m)
    • 3 adits
  • Technical Issue              
    • Launch of TBM on bedrock layer and an upward advance formaintenance of  TBM alignment
    • Mini pipe roof reinforcement considering the stability of pile foundation under Gangneung Station

    • Shield TBM advance preceding 2Arch tunnel considering Gangneung Station Safety

    • Ground reinforcement of Namdae stream considering the improvement of advance performance in sand gravel layer

    • Minimization of the number of adits considering Shield TBM tunnel stability