›› 2005, Vol. 26 ›› Issue (5): 693-698.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Investigation on triaxial rheological mechanical properties of greenschist specimen (II): model analysis

XU Wei-ya1, YANG Sheng-qi1, XIE Shou-yi2, SHAO Jian-fu2, WANG Yi-feng3   

  1. 1. Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China; 2. LML, Universite des Science et Technologie de Lille, Lille 59650, France; 3. Chendu Investigation Design and Research Institute for Hydropower, Chendu 610072, China
  • Received:2004-09-18 Online:2005-05-10 Published:2013-12-17

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Abstract: Firstly based on the triaxial rheological curves of greenschist specimen on rock servo-controlling rheology equipment, five-component viscoelastic model is put forward to identify the curves that show the viscoelastic rheological properties, which gets the viscoelastic rheological parameters of greenschist. Then a new nonlinear viscous component is put forward. When nonlinear viscous component is parallel connected with the plastic component, a new nonlinear viscoplastic body (NVPB) can be gotten, which may reflect the accelerative rheological properties of rock. At the same time, by connecting NVPB model and five-component viscoelastic model in series, we can construct a new seven-component nonlinear viscoelastoplastic rheological model of rock. Then using complete accelerative rheological curve, proposed seven-component nonlinear viscoelastoplastic rheological model of rock is carried out the identification. The correlative parameters of nonlinear rheological model such as viscoelastic modulus and viscosity etc. are also gained. The comparison between the rheological model and experimental result shows that the nonlinear rheological model is right and reasonable.

Key words: rock mechanics, greenschist, triaxial rheology, nonlinear viscoplastic body (NVPB), rheological index, seven- component nonlinear viscoelastoplastic rheological model

CLC Number: 

  • TU458+.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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