›› 2008, Vol. 29 ›› Issue (4): 901-904.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Stduy on index selection of surrounding rock classification for cohesive soil tunnel

CHEN Wei-tao1, WANG Ming-nian1, WANG Yu-suo1, LI Yu-wen2   

  1. 1.School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2. Highway Survey&Design Research Institute, Sichuan Provincial Departaent of Communications, Chengdu 610031, China
  • Received:2006-03-24 Online:2008-04-10 Published:2013-07-10

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Abstract: Taking a long sequence test data of physics and mechanics of cohesive surrounding rock as a base, the indices selection of surrounding rock classification was analyzed in a quantitative angle through mathematical statistics theory and grey-relation method. The research results show that the influential factors of mechanical indices are feasible to be basic classification indices. All preelection indices can be divided into three groups. On the ground of the results of grouping analysis and relation degree degree analysis, integration correlation coefficient of indices were calculated. Plastic index, natural density and liquid index have an important influence on cohesion and inner friction angle based on the value of integration correlation coefficient. The analysis results reveal liquid index, natural density and plastic index are the estimation indices of surrounding rock classification in cohensive soil tunnel.

Key words: cohesive soil tunnel, surrounding rock classification, correlation analysis, grey-relation analysis

CLC Number: 

  • P 588.22
  • 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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