Tunnels and underground construction projects directly or indirectly related to the risk for those who may be charged. In particular, various uncertainties related to soil and groundwater conditions, as well as increasing the cost of construction and environmental risks caused construction delays and construction as well as the collapse of the tunnel leads to a variety of risks. Thus, the possible risk of tunnel excavation during construction and throughout the project, including managing active risk management is very important. In this paper, in order to perform risk management, which may occur during construction was formalized type of tunnel collapse.

• 박정규(포스코건설 기술연구소 토목환경연구그룹 Manager) | Park, Jung Gyu
• 장순호(포스코건설 기술연구소 토목환경연구그룹 Manager) | Jang, Soon Ho
• 신현강(포스코건설 토목환경사업본부 설계그룹 Manager) | Shin, Hyun Gang
• 유충식(성균관대학교 사회환경시스템공학과 교수) | Yoo, Chung Sik