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Characterization of rock heterogeneity and numerical verification
Citation
Liu, H and Roquete, M and Kou, SQ and Lindqvist, PA, Characterization of rock heterogeneity and numerical verification, Engineering Geology , 72, (1-2) pp. 89-119. ISSN 0013-7952 (2004) [Refereed Article]
DOI: doi:10.1016/j.enggeo.2003.06.004
Abstract
On the basis of microstructure analysis and image analysis, rock heterogeneity is modelled by the rock and tool (R-T2D) interaction code according to homogenisation theory. The simulated results predict very well the non-linear stress-strain behaviour and the progressive fracture process of heterogeneous rock material. It is found that the weak parts and subsequent fractures before localization represent an obvious statistically uniform characteristic. Therefore, a statistical method is used to model rock heterogeneity. The results from the statistical modelling are in surprisingly good agreement with those from the homogenisation modelling. Considering the research scale, the rock heterogeneity is characterized better by the Weibull statistical method as a few characteristic parameters: the homogeneous index and the elemental seed parameters of the R-T2D finite element network. Finally, a series of numerical experiments are conducted to validate that the characterization of rock heterogeneity is reasonable and feasible, and that the R-T2D code is stable, repeatable and a valuable tool to research the fracture process of heterogeneous material. © 2003 Elsevier B.V. All rights reserved.
Item Details
Item Type: | Refereed Article |
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Research Division: | Engineering |
Research Group: | Resources engineering and extractive metallurgy |
Research Field: | Geomechanics and resources geotechnical engineering |
Objective Division: | Construction |
Objective Group: | Construction processes |
Objective Field: | Civil construction processes |
UTAS Author: | Liu, H (Dr Hong Liu) |
ID Code: | 63519 |
Year Published: | 2004 |
Web of Science® Times Cited: | 108 |
Deposited By: | Engineering |
Deposited On: | 2010-05-11 |
Last Modified: | 2011-08-01 |
Downloads: | 0 |
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