›› 2006, Vol. 27 ›› Issue (S1): 256-260.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

3D simulation and analysis of space-time effect for construction process of twin tunnel

LI Xin-xing，ZHU He-hua，DING Wen-qi，CAI Yong-can   

  1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
  • Received:2006-05-28 Published:2006-12-15

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Abstract: 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, are analyzed.

Key words: 3D FEM, twin tunnel, construction, space-time effect

CLC Number: 

  • U 45
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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