LABORATORY ASSESSMENT OF THE CLAY-BASED COVERS ABILITY TO LIMIT THE ACID MINE DRAINAGE PRODUCTION
Emmanuel Niamké, Abdelkabir Maqsoud, Tikou Belem, Mamert Mbonimpa
In the proceedings of: GeoSaskatoon 2023: 76th Canadian Geotechnical ConferenceSession: Geoenvironmental 3
ABSTRACT: Clay materials deposit cover a large area in the Abitibi region but are less used in mine site reclamation due to their susceptibility to freeze-thaw (FT) effects. These effects induce changes in their hydrogeological properties and increase their saturated hydraulic conductivity (ksat). Recently, Abitibi clay materials (CM) were amended in the lab and submitted to different FT cycles. Investigation results show that FT effects on the ksat were very limited. To evaluate the possibility of using the amended clay materials as low hydraulic layer (with sand and/or silt material up to 25%) in the mine site reclamation, this study was initiated. Eight Laboratory-based, instrumented experimental columns, were used to simulate, low saturated hydraulic conductivity covers (LSHCC) made with different amended clay materials and submitted to wetting-drying cycles, where volumetric water contents, and suctions were measured. Investigation results show that during tests, the amended clay materials remained close to water saturation and the water infiltration across LSHCC were very limited. These results allow to conclude that amended clay materials can be used adequately as LSHCC.
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Niamké, Emmanuel, Maqsoud, Abdelkabir, Belem, Tikou, Mbonimpa, Mamert (2023) LABORATORY ASSESSMENT OF THE CLAY-BASED COVERS ABILITY TO LIMIT THE ACID MINE DRAINAGE PRODUCTION in GEO2023. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Niamké_GEO2023_117,
author = {{Niamké, Emmanuel}, {Maqsoud, Abdelkabir}, {Belem, Tikou}, {Mbonimpa, Mamert}}
title = {LABORATORY ASSESSMENT OF THE CLAY-BASED COVERS ABILITY TO LIMIT THE ACID MINE DRAINAGE PRODUCTION}
booktitle = {Proceedings of the 76th Canadian Geotechnical Conference}
year = {2023}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {LABORATORY ASSESSMENT OF THE CLAY-BASED COVERS ABILITY TO LIMIT THE ACID MINE DRAINAGE PRODUCTION}
booktitle = {Proceedings of the 76th Canadian Geotechnical Conference}
year = {2023}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }