단층파쇄대가 유틸리티 터널에 미치는 영향

초록

Tunnelling with earth pressure balanced (EPB) shield tunnel boring machine (TBM) is getting popular for the construction of cable tunnel in urban area. Despite the popularity of EPB shield TBM for cable tunnel construction, study on the ground behavior of cable tunnel driven by EPB shield TBM passing through the fractured zone is insufficient. Thus, in this study, the effect of fractured zone ahead of tunnel face on the ground behavior is investigated. Based on the results obtained from the three dimensional numerical analysis, the critical orientation of fractured zone ahead of tunnel face is derived.