What is it about?

The scale dependency of permeability in naturally fractured rocks has been received a lot of attention over the past decades. In this work we have investigated the impact of stress and roughness on this dependency. The approach was applied on different fractured outcrop samples ranging from m to km scale.

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Why is it important?

The results showed that the full tensor representation of permeability is essential for modeling flow through fractured rock at the continuum scale. Our findings indicate a convergence towards a scale-invariant equivalent permeability and fracture density with increasing sample size. The spatial variation of the permeability tensor and the change in the degree of anisotropy with sample size reflect the inhomogeneity of the fracture patterns.

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This page is a summary of: The impact of stress orientation and fracture roughness on the scale dependency of permeability in naturally fractured rocks, Advances in Water Resources, July 2020, Elsevier,
DOI: 10.1016/j.advwatres.2020.103579.
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