›› 2005, Vol. 26 ›› Issue (12): 2010-2014.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on choosing minimal rock cover and analysing stability of Xiamen subsea tunnel

LI Ting-chun1,2, LI Shu-cai2,3, BAI Shi-wei2   

  1. 1. College of Civil Engineering and Architecture, Shandong University of Science and Technology, Tai’an 271019, China; 2. Key Laboratory of Rock and Soil Mechanics, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 3. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, China
  • Received:2004-06-23 Online:2005-12-10 Published:2014-01-12

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Abstract: In order to choose rock cover of Xiamen subsea tunnel now, 3D elastoplastic constitutive relation and damage evolution equation for 4 profiles has been done along the longitudinal of the tunnel. The numerical results of stress distribution, displacements, plastic zones and damage zones of rock mass after excavation are got. By means of analysis of stress disturbed area, and comparing rock cover of weak regolith with stress disturbed area at axis and raising or decreasing, it is easy to determine minimal rock cover; similarly, it is satisfying to evaluate stability from the numerical results of stress distribution, displacements, plastic zones and damage zones of rock mass after excavation. Thus, it can be concluded that the tunnel is stable even the rock cover of the subsea tunnel decrease 4m compare to the original design elevation by organic integration of the two.

Key words: Xiamen’s subsea tunnel, damage evolution equation, stress disturbed area, stability

CLC Number: 

  • U 451
  • 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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