PROJECTSubway tunnels

Subway tunnels

Subway tunnels Seoul Metro Line 9 Phase 4 Extension (C2)
Category T / K Basic & Detailed design
Client Seoul Metropolitan City Infrastructure Headquarters
Contractor Taeyoung E & C
Period January 08, 2021 ~ May 11, 2022
Project Information
  •  Location

    Myeongil-dong, Gangdong-gu, Seoul ~ Godeok-dong, Gangdong-gu, Seoul 

 

  •  Description
    • Total L = 1,289.6m
    • Tunnel L = 861.6m
    • Open Tunnel L = 44.1m
    • 2 Station L = 383.9m
    • Transfer passage L = 168.5m

 

      • Technical Issue              
        • The measures to secure the safety of Seoul-Sejong Expressway tunnel parallelling Metro Line 9
        • Establishment of measures to ensure the separation distance and safety of Line 5, crossing directly above Line 9                

        • Selection of a excavation method to minimize the impact of blasting vibrations in urban area