›› 2006, Vol. 27 ›› Issue (S1): 290-295.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Dynamic research on the minimum rock covers of subsea tunnel construction using drilling and blasting method

WANG Han-peng1，LI Shu-cai1，QIAO Ling2   

  1. 1. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China； 2. Bureau of Geo. Minerals, Zhangqiu City, Zhangqiu 250200, China
  • Received:2006-04-15 Published:2006-12-15

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Abstract: Ascertaining the minimum rock covers of subsea tunnel is important to reduce project cost on the conditions of subsea tunnel safety. Researching the dynamic influence of tunnel blasting construction on the cover rock mass is necessary to the minimum rock covers. The effect of subsea tunnel construction using drilling and blasting method to overlaying strata is analyzed through FLAC3D numerical simulation. The influence of different subsea tunnel level and charge weight on the interface of overlaying strata is analyzed. The blasting vibration velocity history and stress vibration history at key points and the plastic zone are gained and contrasted with the result of experimental formula; synthesizing the above analysis and considering economical and safety of subsea tunnel, we suggest that charge weight should be reduced and subsea tunnel level should be descended 2 meters.

Key words: subsea tunnel, minimum rock covers, drilling and blasting construction, dynamics, FLAC3D, numerical simulation

CLC Number: 

  • U452
  • 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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