›› 2007, Vol. 28 ›› Issue (S1): 437-442.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

3D FEM analysis of excavating two intersecting tunnels in bad geology

XU Bin1, WANG Kang-zhu2, LI Ning1, 3   

  1. 1. Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an 710048, China; 2. Northwest Investigation Design and Research Institute, Xi’an 710065, China; 3. State Key Lab. of Frozen Soil Eng., CAS, Lanzhou 730000, China
  • Received:2007-05-31 Online:2007-10-25 Published:2014-03-28

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Abstract: A large arch-wall-shaped cross-section with 28 m in span and 22 m in height formed in the Jishixia waterpower project when the spillway tunnel and the diversion tunnel intersect in bad geologic site. The surrounding rocks are distributed in layers and a weak intercalation goes through the top of a cross-section. To verify the schemes of excavation and supports, 3D numerical simulation of excavating which tracks construction process is used to study the stresse and deformation distribution and the stability of the surrounding rocks. At the same time, the weak intercalation is taken into consideration. The results may have better reference values for similar projects in the future.

Key words: large cross-section, intersection of the two tunnels, weak intercalation, numerical simulation analysis

CLC Number: 

  • TU 443
  • 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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