This paper analyzed the damage type from completed shield TBM tunnels in case study. To identify damage type, the reports on field investigation and maintenance with 6 sites were performed an analysis. As results of the analysis, the various damage types were presented in completed shield TBM tunnels. However, completed shield TBM tunnels were expected to be available as permanent structure through regular maintenance.

• 성주현(한국시설안전공단 시설안전연구소, 선임연구원) | Seong, Joo Hyun
• 변요셉(한국시설안전공단 시설안전연구소, 연구원) | Byun, Yo Seph
• 이유석(한국시설안전공단 시설안전연구소, 선임연구원) | Lee, Yu seok