›› 2009, Vol. 30 ›› Issue (4): 989-996.

• Geotechnical Engineering • Previous Articles     Next Articles

Weighted function method for minimum rock cover thickness of subsea tunnel

LI Shu-cai1，XU Bang-shu2，DING Wan-tao1，ZHANG Qing-song1   

  1. 1. Research Center of Geotechnical & Structural Engineering, Shandong University, Jinan 250061, China; 2. Department of Underground Space, School of Civil and Hydraulic Engineering, Shandong University, Jinan 250061, China
  • Received:2007-09-10 Online:2009-04-10 Published:2011-01-30

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Abstract:

Minimum rock cover thickness is an important parameter in vertical route design of subsea tunnel; and it affects subsea tunnel cost and security. General methods for minimum rock cover thickness of subsea tunnel are summarized; including engineering analogy method and numerical analysis method. Additionally, appropriate conditions are analyzed for all methods. Minimum distance method is presented for minimum rock cover thickness based on a great number of numerical analysis experiences. Weighted function method for minimum rock cover thickness is presented according to expert experience and is applied to Qindao Jiaozhou subsea tunnel. The research results give a reference to subsea tunnel design and construction.

Key words: subsea tunnel, minimum rock cover thickness, minimum distance method, weighted function method, Norwegian construction experience

CLC Number: 

  • U 449
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