Physical modelling of tailings consolidation near a waste rock inclusion

Faustin Saleh-Mbemba, Michel Aubertin

In the proceedings of: GeoSt. John's 2019: 72nd Canadian Geotechnical Conference

Session: Mining

ABSTRACT: A laboratory physical modelling study was conducted to assess the effect of waste rock inclusion on the consolidation of tailings from hard rock mines. The evolution of pore water pressures during consolidation of tailings with and without a drainage inclusion has been monitored and analyzed. This investigation focuses on the evolution of tailings geotechnical characteristics (void ratio and volumetric water content), water transfer from the tailings to the waste rock, and movement of fine particles at the interface between the two materials. The experimental results demonstrate quantitatively how a waste rock inclusion affects tailings consolidation by reducing the pore water pressures with an accelerated water drainage.

RÉSUMÉ: résidus de mines en roches dures. L'évolution des pressions interstitielles lors de la consolidation des résidus avec et sans inclusion drainante a été mesurée e principalement sur caractéristiques géotechniques des résidus (i.e. indice des vides et teneur en eau volumique)démontrent de manière quantitative comment une inclusion de roches stériles affecte la consolidation des résidus en réduisant les pressions interstitielles par un drainage accéléré de l'eau.

Please include this code when submitting a data update: GEO2019_313

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