›› 2008, Vol. 29 ›› Issue (4): 1027-1030.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on mechanic parameters of bolted fractured rock mass under unloading

DENG Hua-feng1,2, LI Jian-lin1,2, WANG Le-hua   

  1. 1.College of Civil & Hydropower Engineering, China Three Gorges University, Yichang 443002,China;2.School of Water Resource and Hydropower, Wuhan University, Wuhan 430072,China
  • Received:2006-04-10 Online:2008-04-10 Published:2013-07-10

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Abstract: How to decide the parameters of bolted rock mass is an important and complicated problem in geotechnical engineering. Taking unloading into account, the variation regularity of compression strength, Poisson′s ratio, elastic modulus, c and friction angle ? values were studied and simulated by computer; and different loading-unloading paths, anchoring angle, strength of rock mass were taken into account. The computed results show that the influence of unloading process before reinforcement should not be neglected. Finally, some experimental data were used to testify the above-mentioned analysis.

Key words: systematic bolts, unloading rock mass, mechanical parameter, numerical model test

CLC Number: 

  • TU 452
  • 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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