Delphi 기법을 이용한 토압식 쉴드 TBM 공법의 공기지연 요인 분석에 관한 연구

초록

The NATM is not suitable for downtown areas because it causes a lot of noise, pollution, and civil complaints in the process of construction. The applicability of the Shield TBM method; first introduced into the domestic industry in the 1980s, tends to be increased by overcoming the weaknesses of the NATM. In order to apply the Shield TBM method with its efficient construction management, this study analyzes the delay factor and leveled the importance of each delay factor by using the Delphi method. Carrying out constant surveys targeting the Shield TBM method experts, seven key factors of construction delay and following factors are derived to apply the Delphi method. Afterwards the delay factors derived from the study are expected to be the foundation of effective management of construction schedule management as fundamentals of the Shield TBM drilling.