›› 2006, Vol. 27 ›› Issue (1): 35-40.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study on dynamic characteristics of tailings material

ZHANG Chao, YANG Chun-he, BAI Shi-wei   

  1. Key Laboratory of Rock and Soil Mechanics, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2005-01-05 Online:2006-01-10 Published:2013-10-31

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Abstract: Through the dynamic triaxial tests and the resonant column apparatus tests of the tailings material taken from a copper mine, the dynamic deformation properties are studied. From the experiment results, a practical strain pore-water pressure model is given and a formula to forecast the dynamic pore-water pressure is presented. Compared with Seed’s forecast formula, the formula can forecast the dynamic pore-water pressure of saturated tailings material more precisely. Based on the effect of different relative density on liquefaction property of tailings material, a conclusion is drawn that the liquefaction strength will obviously increase with the increase of relative density before the relative density is less than 70%. From the dynamic triaxial tests with different confining pressures, it is found that the dynamic shear stress ratio is less while the confining pressure is more in the condition of the same vibration times. Through the resonant column apparatus tests, it can be found that the damping ratio will increase with the dynamic shear strain increases, while dynamic shear modulus will decrease at the same time. And another conclusion that the relationship between dynamic shear modulus and damping ratio with dynamic shear strain is not sensitive to the confining pressure can be drawn.

Key words: tailings material, dynamic properties, pore-water pressure model, relative density, tailings dam

CLC Number: 

  • TD 315
  • 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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