LI Xin-xing, ZHU He-hua, DING Wen-qi, et al. 3D simulation and analysis of space-time effect
for construction process of twin tunnel[J]. 2006, 27(S1).DOI:
By using 3D finite element method to simulate the construction process of twin tunnel
the space-time effect of the deformation of surrounding rocks and the transaction between the left tunnel and the right tunnel
are analyzed and discussed. It is found that the influence region on deformation is about 2.5 times of the tunnel diameter in the case of the excavation of single tunnel. During the excavation of twin tunnel
the influence region on deformation of left hole is about 2 times of the tunnel diameter in front of advancing face
and is about equal to the tunnel diameter at the back of advancing face. Finally
the variation of maximum settlement in vault midline and location with face advancing and the effect of right hole