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DOI: 10.1680/jgele.21.00131

Computation of local permeability in granular soils

V. S. Ramakrishna AnnapareddyAdnan SufianThierry BoreMathieu BajodekAlexander Scheuermann
Dec 2022
摘要
This letter proposes semi-analytical methods to obtain the local permeabilityfor granular soils based on indirect measurements of the local porosity profilein a large coaxial cell permeameter using spatial time domain reflectometry.The porosity profile is used to obtain the local permeability using themodified Kozeny-Carman and Katz-Thompson equations, which incorporated aneffective particle diameter that accounted for particle migration within thepermeameter. The profiles of the local permeability obtained from the proposedmethods are compared with experimentally obtained permeability distributionsusing pressure measurements and flow rate. The permeabilities obtained with theproposed methods are comparable with the experimentally obtained permeabilitiesand are within one order of magnitude deviation, which is an acceptable rangefor practical applications.
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