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|Title:||Determining the intrinsic permeability of frazil ice. Part 1, Laboratory investigations.|
|Authors:||White, Kathleen D.|
|Publisher:||Cold Regions Research and Engineering Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||CRREL report ; 91-23.|
Abstract: The intrinsic permeability of frazil ice describes the capacity for flow through the ice matrix and can be used to estimate the porosity of the deposit. There are no existing in-situ tests for determining the intrinsic permeabiliy of a frazil ice deposit. The borehole dilution test, an in-situ, relatively non-destructive test often used in soils testing, was modified for use in frazil ice. In this test the dilution of a dye tracer introduced into a borehole made in a laboratory frazil ice deposit was measured over time. The test results were used to find the seepage velocity through the frazil deposit, from which the intrinsic permeability is calculated using the Dupuit—Forchheimer approximation to flow between two reservoirs. The results from the laboratory experiments indicate that the test may be modified for use as an in-situ method to determine intrinsic permeability in frazil ice deposits.
|Appears in Collections:||CRREL Report|