›› 2007, Vol. 28 ›› Issue (5): 971-975.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Evaluation of rock mass quality based on fractal dimension of rock mass discontinuity distribution

LIU Yan-zhang1, SHENG Jian-long2, GE Xiu-run1, WANG Shui-lin1   

  1. 1. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Wuhan University of Science and Technology, Wuhan 430081, China
  • Received:2006-03-01 Online:2007-05-10 Published:2013-09-10

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Abstract: The rock mass discontinuity, owing to its property of self-similarity, can be addressed with the fractals although it is irregular in space and complex in network structure. The present study has testified the fractal characteristics of rock mass discontinuity distributions based on the calculation of the fractal dimensions of discontinuity distributions in the roadway surrounding rock masses at an underground mine with the application of the box-dimension method. By analyzing the fractal dimension values, this investigation shows that the higher the value is, the denser the discontinuity distribution, the longer the discontinuity traces, and the lower the rock mass quality; and it is shown that taking the fractal dimension of rock mass discontinuity distribution as the index of rock mass quality rating is feasible. By comparing the fractal dimensions calculated above with the corresponding rock mass grades classified by the standard for engineering rock mass rating, a scheme of rock mass quality classification, which takes the fractal dimension of the discontinuity distribution as the classifying index, is proposed.

Key words: rock mass discontinuity, fractal dimension, rock mass quality, roadway surrounding rock mass

CLC Number: 

  • TU 45
  • 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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