Author(s): Kathleen D. White; Daniel E. Lawson
Linked Author(s): Kathleen D. White
Keywords: No Keywords
Abstract: The intrinsic permeability of a frazil deposit can be used to describe its flow capacity and structure. Because of the nature of frazil ice, an in-situ test is desirable when determining this parameter in natural frazil deposits. This paper describes the application of a borehole dilution test to determine seepage velocity, which is then used to calculate intrinsic permeability and estimate porosity. Seepage velocities ranged from 0.29 x 10-3 to 5.98 x 10-3 cm/s (2.56 x 10-3 cm/s average), and average intrinsic permeability was 2.75 x 10-4 cm2. Porosities for d10 grain sizes of 0.5 and 3.5 mm were 82.9 and 47.9%, respectively. Seepage velocity and porosity data are also compared to data from laboratory borehole dilution tests, previous in-situ groundwater flow meter measurements at the same site, and permeameter tests on remolded samples.
Year: 1992