PROJECTSubway tunnels

Subway tunnels

Subway tunnelsSeoul Subway Line 8 Extension (Byeollae C6)
Category T / K Basic & Detailed design
Client Gyeonggi Provincial Government
Contractor Korea Development Corporation
Period May 06, 2015 ~ April 30, 2016
Project Information
  • Location
    Sano-dong, Guri-si, Gyeonggi-do ~ Byeollae-dong, Namyangju-si, Gyeonggi-do, Korea


  • Description
    • Total L = 2,380m
    • Tunnel L = 2,211m
    • Station L = 125m
    • Shaft L = 44m


  • Technical Issues
    • Determination of the allowable range of the groundwater level drawdown considering greenhouses above the tunnel
    • Design of tunnel support systems and auxiliary reinforcement methods for passing through the fault zone
    • Selection of underpinning methods for the safe construction without hampering the existing station's services including passage way connecting new underground station with the existing station on the ground