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Tailings and Mine Waste Conference
Determination of water storage and permeability functions for oil sands tailings Fredlund, Delwyn G.; Stone, Jeff; Stianson, Jason; Sedgwick, Andrea
Abstract
The paper describes how soil-water characteristic curve, SWCC, tests can be conducted on high volume change materials and used in conjunction with an independently measured shrinkage curves to provide the required unsaturated soil property functions for numerical simulations of the drying process. The saturated-unsaturated soil property functions are used for modeling the drying of oil sands tailings. A laboratory test procedure was developed for the accurate measurement of the shrinkage behavior of oil sands tailings. A laboratory test procedure for measuring and interpreting the shrinkage curve results is also presented. A regression curve-fitting analysis was used to obtain a closed-form equation for the shrinkage curve. The shrinkage curve results are combined with the measured soil-water characteristic curve and used to identify the “true” air-entry value and residual conditions for the oil sands tailings. The meaning of various forms for the SWCC is described along with a designation of the correct interpretation that needs to be placed on the soil-water characteristic curve when determining both the permeability function and the water storage function. The saturated coefficient of permeability is combined with the SWCC to compute the hydraulic properties for the oil sands tailings. The paper concludes with a description of the manner in which each of the unsaturated soil properties can be used for the numerical simulation of drying oil sands tailings.[All papers were considered for technical and language appropriateness by the organizing committee.]
Item Metadata
Title |
Determination of water storage and permeability functions for oil sands tailings
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Creator | |
Contributor | |
Date Issued |
2011-11
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Description |
The paper describes how soil-water characteristic curve, SWCC, tests can be conducted on high volume change
materials and used in conjunction with an independently measured shrinkage curves to provide the required
unsaturated soil property functions for numerical simulations of the drying process. The saturated-unsaturated
soil property functions are used for modeling the drying of oil sands tailings. A laboratory test procedure was
developed for the accurate measurement of the shrinkage behavior of oil sands tailings. A laboratory test
procedure for measuring and interpreting the shrinkage curve results is also presented. A regression curve-fitting
analysis was used to obtain a closed-form equation for the shrinkage curve. The shrinkage curve results are
combined with the measured soil-water characteristic curve and used to identify the “true” air-entry value and
residual conditions for the oil sands tailings. The meaning of various forms for the SWCC is described along
with a designation of the correct interpretation that needs to be placed on the soil-water characteristic curve
when determining both the permeability function and the water storage function. The saturated coefficient of
permeability is combined with the SWCC to compute the hydraulic properties for the oil sands tailings. The
paper concludes with a description of the manner in which each of the unsaturated soil properties can be used for
the numerical simulation of drying oil sands tailings.[All papers were considered for technical and language appropriateness by the organizing committee.]
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Genre | |
Type | |
Language |
eng
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Date Available |
2011-11-04
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0107734
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URI | |
Affiliation | |
Peer Review Status |
Unreviewed
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Scholarly Level |
Other
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International