Permeability of uniaxially compressed freshwater ice


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Created: Mar 24, 2021 at 2:52 p.m.
Last updated: Mar 24, 2021 at 2:59 p.m.
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Abstract

Fractured rock permeability can increase by crack extension that creates additional flow pathways or by increases in crack openings that increase crack transmissivity. Understanding the partitioning between these two mechanisms during rock deformation is critical for conceptual models of fluid flow and transport in crystalline rocks and sedimentary layers with low matrix permeability and for the hydromechanics of crustal rocks. Using ice as a model for rock, new systematic experiments reveal that when subject to uniaxial loading at a constant strain rate, crack density remains nearly constant after the onset of percolation even while permeability increases, indicating that after the onset of percolation the increase in permeability is primarily due to the opening of existing cracks rather than the extension of cracks. These observations have implications for conceptual models of fractured rock permeability which often focus on the evolution of permeability with changing fracture density rather than changing fracture transmissivity and for attempts to link fractured rock permeability to seismic properties which often dominantly consider changes in crack density rather than crack apertures.

Data include summary of loading curves, elastic properties and permeabilities of crack networks created in uniaxially compressed freshwater ice

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Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
National Science Foundation Permeability and Elastic Properties of Fractured Rock: Systematic Experimental Investigation and Model Development EAR – 1519706

How to Cite

Renshaw, C. (2021). Permeability of uniaxially compressed freshwater ice, HydroShare, http://www.hydroshare.org/resource/af0e65ea954b4da890d029d022fff189

This resource is shared under the Creative Commons Attribution CC BY.

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