›› 2006, Vol. 27 ›› Issue (8): 1267-1271.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on creep characteristics and constitutive relation of rock salt

LIU Jiang1, 2, YANG Chun-he1, WU Wen1, GAO Xiao-ping1   

  1. 1. Key Laboratory of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China； 2. The Second Investigation and Design Institute, China Transportation Engineering, Wuhan 430071, China
  • Received:2005-03-03 Online:2006-08-10 Published:2013-11-26

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Abstract: Uniaxial and triaxial creep tests have been performed on rock salt of Jintan Salt Mine on high temperature and high pressure triaxial rheological device; the creep characteristics of rock salt are investigated and the effect of stress state and temperature of rock salt are analyzed; and then the creep characteristic curve and parameters are obtained. Based on the character of creep curve of rock salt, a creep constitutive model of rock salt is established by using viscoelasto-plastic theory. Through the test results, it is shown that the steady state creep strain rate is a nonlinear function of diviatoric stress and temperature; a steady state creep constitutive model of rock salt is established. The patameters of constitutive equation are obtained by fitting test data; the theoretic results is proved well by comparison with the experimental results.

Key words: rock salt, creep test, temperature, constitutive relation

CLC Number: 

  • O 319.56
  • 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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