ISSN : 2233-8292
The structural anisotropy and heterogeneity of rock mass, caused by discontinuities and weak zones, have a great influence on the deformation behavior of a tunnel. A tunnel construction in these complex ground conditions is very difficult. No matter how excellent a geological investigation is, local uncertainties of rock mass conditions still remain. Under these uncertain circumstances, an accurate forecast of the ground conditions ahead of the advancing tunnel face is indispensable to a safe and economic tunnel construction. This paper presents the effect of anisotropy and heterogeneity of the rock masses to be excavated by numerical analysis. The influences of distance from weak zone, the size or dimension, the different stiffness and the orientation of weak zones are analysed by 3-D finite element analysis. By analysing these numerical results, the tunnel behavior due to excavation can be well understood and the prediction of rock mass condition ahead of the tunnel face can be possible.
(2004) 터널 내공 변위 거동 분석에 관한 연구,
(1991) 지하 양수발전소 설계를 위한 불연속 암반의 2차원 및 3차원 응력해석,
(2004) 3차원 수치해석을 이용한 터널막장 전방 지반 상태의 예측,
(2001) 불연속 암반의 3차원 이방성 변형특성의 평가,
(1998) 3차원 절대내공변위를 이용한 터널 막장전방의 지반변화 예측기법,
(1999) 파쇄대 예측을 위한 터널의 3차원 수치해석,
(2005) Tunnel convergence analyses in heterogeneous/anisotropic rock masses,
(1993) Erfahrungen bei der Durchorterung einer Grossstorung im Inntal tunnel,
(1995) Importance of longitudinal deformations in tunnel excavation, Proc. of Int. Society for Rock Mechanics
(2000) Prediction of Displacements in Tunnelling,
(1997) Application of new methods of monitoring data analysis for short term prediction in tunnelling,