Permeability Evolution Laws and Equations during the Course of Deformation and Failure of Brittle Rock
Publication: Journal of Engineering Mechanics
Volume 139, Issue 11
Abstract
Permeability tests on limestone and sandstone during the course of deformation and failure are carried out with a servocontrolled testing machine. The permeability evolution of the two kinds of rocks with axial, lateral, and volumetric strains are investigated. The test results show that the permeability has an obvious correlation with the strain. The permeability mechanisms during the course of deformation and failure are discussed. According to the feature variations of permeability and strain of rock specimens, a conceptual model for the permeability evolution with the strain is proposed. The test results of sandstone are used to validate this model, and the relevant permeability-strain equation in the process of deformation and failure is fitted by using the mathematical method. The fitting precision is good. The proposed equation may provide another important control equation for the stress-seepage coupling analysis.
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Acknowledgments
This work is financially supported by the National Basic Research Program of China (973 Program) (Grant No. 2011CB013504), the State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining & Technology (SKLGDUEK1108), the Natural Science Foundation of China (Grant Nos. 51009052, 11172090, 11272113), the Natural Science Foundation of Jiangsu Province (Grant No. BK2012809) and the National Key Technology R & D Program of China (Grant No. 2012BAK03B04).
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Information
Published In
Journal of Engineering Mechanics
Volume 139 • Issue 11 • November 2013
Pages: 1621 - 1626
Copyright
© 2013 American Society of Civil Engineers.
History
Received: May 14, 2009
Accepted: Feb 14, 2013
Published online: Feb 18, 2013
Published in print: Nov 1, 2013
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