Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/916521

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Title
2D-numerical analysis of hydraulic fracturing in heterogeneous geo-materials
Author/Creator
Wang, S. Y.;  Sun, L.;  Au, A. S. K.;  Yang, T. H.;  Tang, C. A.
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering
Description
A geo-material failure process analysis (F-RFPA2D), considering the coupling of stress distribution, fluid flow, and element damage evolution, is used to investigate the mechanisms of crack initiation and propagation around a 2-D cylindrical cavity in heterogeneous stiff soils during hydraulic fracturing. A large number of numerical analysis on hydraulic fracturing in stiff soil with pre-existing injection cavity have been carried out to study the mechanism of hydraulic fracturing in stiff soil. In addition, the characteristic of acoustic emission (AE) due to hydraulic fractures are studied by numerical simulations. The results provide a better understanding of the crack initiation and propagation mechanisms during hydrofracturing. The simulation software package can be a powerful tool for study of soil behavior during hydraulic fractures.
Relation
Construction and Building Materials Vol. 23, Issue 6, p. 2196-2206
Publisher Link
http://dx.doi.org/10.1016/j.conbuildmat.2008.12.004
Date
2009
Publisher
Elsevier
Keyword(s)
hydraulic fracture;  numerical simulation;  cavity expansion;  stiff soil;  heterogeneity
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/916521
Identifier
ISSN:0950-0618
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Subject
"Construction and Building Materials"
 
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