In this study, The correlation between drainage clogging of drain tunnel and leakage of lining was analyzed. As a result of analysis, the position of clogged drainage hole, leakage and efflorescence location are similar. When repairing leakage of lining, the maintenance method should be selected considering the clogging of tunnel drainage.

• 박상희(한국시설안전공단) | Park, Sang Hee
• 윤태국(한국시설안전공단) | Yoon, Tae Gook
• 고정(한국시설안전공단) | Go, Jung 교신저자
• 유선상(한국시설안전공단) | Yoo, Seon Sang