›› 2006, Vol. 27 ›› Issue (S1): 1179-1182.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Shear creep and long-term strength test research on unconformity plane

PANG Zheng-jiang，HU Jian-min   

  1. Rock Foundation division, Yangtze River Scientific Research Institute, Wuhan 430010, China
  • Received:2006-06-20 Published:2006-12-15

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Abstract: In view of typical representative rock layer in a power plant, the rock shearing creep indoor test is carried out, to research creep characteristic in the rock mass shear failure process. This article selects the extended Burgers model to establish shearing creep equation; and uses the MATLAB tool function fminsearch to fit the nonlinear relation between U and t according to shearing creep test; determines creep parameters of structural plane in the rock mass; and determines its long-term shearing strength according to the direct shear test. Compared to the instant shearing strength, using the long-term strength in design is more reliable to guarantee the project security.

Key words: shearing creep, extended Burgers model, nonlinear curve fitting, instant shearing strength, long-term strength

CLC Number: 

  • TU 458+.3
  • 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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