A New Visco-elasto-plastic Rheological Model of Rock

doi:10.3969/j.issn.1001-5485.2014.07.008

JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2014, Vol. 31 ›› Issue (7): 44-48.DOI: 10.3969/j.issn.1001-5485.2014.07.008

• ROCKSOIL ENGINEERING • Previous Articles Next Articles

A New Visco-elasto-plastic Rheological Model of Rock

JIANG Hai-fei^1,2, HU Bin¹, LIU Qiang¹, WANG Xin-gang¹

1.Faculty of Engineering, China University of Geosciences, Wuhan 430074, China;
2.Geological Environmental Monitoring Station of Guangxi Zhuang Autonomous Region , Guilin 541004,China

Received:2013-03-15 Revised:2014-07-03 Online:2014-07-01 Published:2014-07-04

Abstract

Abstract: According to the rheological mechanical properties of rock, a visco-plastic model which depicts the creep acceleration stage of rock is proposed. This model is connected with five-component visco-elastic shear rheological model in series, thus establishing a new visco-elasto-plastic rheological model of rock. The shear rheological curves of granite is used to identify the visco-elasto-plastic rheological model, and the rheological parameters of the model are obtained. Comparison between the model fitted result and the shear rheology test result shows that the accelerating rheological properties of rock can be described effectively by this visco-elasto-plastic rheological model.

Key words: rock mechanics, creep acceleration stage, nonlinear, in series, visco-elasto-plastic rheological model

CLC Number:

TU452

JIANG Hai-fei, HU Bin, LIU Qiang, WANG Xin-gang. A New Visco-elasto-plastic Rheological Model of Rock[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2014, 31(7): 44-48.

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A New Visco-elasto-plastic Rheological Model of Rock

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