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Geotechnical characterisation of alluvial soils used to contain industrial liquid wastes |
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| Authors: | T. Itakura D. W. Airey J. Y. M. Dobrolot |
| Affiliation: | (1) Environment Division, Australian Nuclear Science and Technology Organisation, PMB1, Menai, NSW, 2234, Australia;(2) Department of Civil Engineering, University of Sydney, Sydney, NSW, 2006, Australia;(3) Waste Service NSW, PO Box 669, Chatswood, NSW, 2057, Australia |
| Abstract: | A wide range of geotechnical tests has been carried out to characterise an extensive alluvial deposit that is used as containment for a landfill in which liquid wastes are disposed. The landfill covers an area of 357 ha. Data obtained from the current and previous studies have been used to explore the variability of the properties of two alluvial layers. The upper layer is predominantly silty clay, while the lower layer contains a much wider range of particle sizes. Variations in hydraulic conductivity covering seven orders of magnitude have been measured in both layers. The selection of appropriate parameters for contamination migration studies is discussed. |
| Keywords: | Landfill Clay Alluvial soils Index properties Hydraulic conductivity |
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