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Large-Strain Consolidation Behaviour of Uranium Mill Tailings from Northern Saskatchewan, Canada

Imteaz Bhuiyan, Shahid Azam

In the proceedings of: GeoRegina 2014: 67th Canadian Geotechnical Conference

Session: Mining Geotechnics

ABSTRACT: The objective of this research was to investigate the large-strain consolidation behaviour of uranium mill tailings samples. During self-weight and load-induced consolidation the interface height reduction were found to be 30% to 42%. The change in void ratio was higher for 4% mill tailings (e = 2.5) than 5% and 6% mill tailings (e = 1.3~1.7). The lowest measurable effective stress was 0.3 kPa for all mill tailings. The void ratio at the effective stress of 1 kPa was found to be 3.8, 3.1 and 3.4 respectively. The k values showed an initial scatter before attaining a steady value and found to be ranging from approximately 10-7 m/s to 10-8.

RÉSUMÉ: L'objectif de cette recherche était d'étudier le comportement de consolidation d'échantillons de résidus d'uranium sous grande tension. Au cours de la consolidation induite par l™auto- chargement, la réduction de la hauteur de l'interface a varié entre 30 et 42 %. Le changement de taux de vide était plus élevé pour les résidus de 4 % (e = 2.5) que les résidus de 5 % et 6 % (e = 1,3 ~ 1,7) . La contrainte efficace la plus faible qui pouvait être mesurée était de 0,3 kPa pour tous les résidus. Pour une contrainte effective de 1 kPa, les valeurs des rapports de vide étaient égales à 3,8, 3,1 et 3,4 respectivement. Les valeurs de k ont montré initialement une dispersion avant d'atteindre une valeur stable comprise entre environ 10-7 et 10-8m/s.

Please include this code when submitting a data update: GEO2014_166

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Cite this article:
Imteaz Bhuiyan; Shahid Azam (2014) Large-Strain Consolidation Behaviour of Uranium Mill Tailings from Northern Saskatchewan, Canada in GEO2014. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GeoRegina14Paper166, author = Imteaz Bhuiyan; Shahid Azam,
title = Large-Strain Consolidation Behaviour of Uranium Mill Tailings from Northern Saskatchewan, Canada ,
year = 2014
}