Study on the Relationship between Parameters of Deterioration Creep Model of Rock under Different Modeling Assumptions

Ming Huang; Xin Rong Liu

doi:10.4028/www.scientific.net/AMR.243-249.2571

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 243-249Study on the Relationship between Parameters of...

Study on the Relationship between Parameters of Deterioration Creep Model of Rock under Different Modeling Assumptions

Abstract:

Based on the analysis to the characteristics of two kinds of rock steady creep curves, the nBurgers model that can describe the uniaxial creep properties of rock is presented. Considering the external influences on rock deformation as instantaneous elastic deterioration defined by the reduction of instantaneous elastic modulus and long-term creep deterioration defined by the reduction of long-term creep modulus, kBurgers model with deterioration is presented too. On this basis, three-dimensional model considering the Poisson’s ratio and Bulk modulus as the constant are established separately, and the relationship between their parameters is obtained. Finally, According to a calculation example, the deterioration evolution of model parameters considering water content changing under the assumption of constant bulk modulus is analyzed. In addition, the deterioration evolution equations of instantaneous elastic and long-term creep under the assumption of constant bulk modulus are obtained. It is verified that conversion relationships of model parameters are reasonable.

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Periodical:

Advanced Materials Research (Volumes 243-249)

Pages:

2571-2580

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.243-249.2571

Citation:

Cite this paper

Online since:

May 2011

Authors:

Ming Huang, Xin Rong Liu

Keywords:

Constant Bulk Modulus, Constant Poisson’s Ratio, Deterioration, Viscoelastic Model

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