Experimental investigation and micromechanical analysis of damage and permeability variation in brittle rocks

2010 ◽  
Vol 47 (5) ◽  
pp. 703-713 ◽  
Author(s):  
T. Jiang ◽  
J.F. Shao ◽  
W.Y. Xu ◽  
C.B. Zhou
Keyword(s):  
Experimental Investigation ◽  
Micromechanical Analysis ◽  
Brittle Rocks ◽  
Permeability Variation

Coupling Analysis between Stress Induced Anisotropic Damage and Permeability Variation in Brittle Rocks

2007 ◽  
Vol 340-341 ◽  
pp. 1133-1138 ◽  
Author(s):  
Hui Zhou ◽  
Jian Fu Shao ◽  
Xia Ting Feng ◽  
Da Wei Hu
Keyword(s):  
Damage Model ◽  
Coupling Model ◽  
Mechanical Analysis ◽  
Effective Porosity ◽  
Anisotropic Damage ◽  
Permeability Evolution ◽  
Coupling Analysis ◽  
Brittle Rocks ◽  
Permeability Variation ◽  
Set Up

In this paper, a coupling constitutive model is proposed for anisotropic damage and permeability variation in brittle rocks before cracks fully coalesce. In this coupling model, an anisotropic damage model is employed to perform the mechanical analysis, and a statistical penetration model is set up to describe the effective porosity and permeability evolution in brittle rocks. For the coupling analysis, anisotropic damage model offers statistical penetration model the crack length in various directions, and statistical penetration model inversely provides anisotropic damage model with permeability of rock for coupling hydro-mechanical analysis. The proposed coupling model is applied to Lac du Bonnet granite, and generally a good agreement is obtained between numerical simulations and experimental data.

Experimental Investigation on Correlation Between Permeability Variation and Pore Structure During Coal Pyrolysis

2009 ◽  
Vol 82 (2) ◽  
pp. 401-412 ◽  
Author(s):  
Zhao Yangsheng ◽  
Qu Fang ◽  
Wan Zhijun ◽  
Zhang Yuan ◽  
Liang Weiguo ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Pore Structure ◽  
Coal Pyrolysis ◽  
Permeability Variation
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