Effect of the degree of saturation and mineralogy on acid generation critical time
Chevalier Corentin, Pabst Thomas
Dans les comptes rendus d’articles de la conférence: GeoSaskatoon 2023: 76th Canadian Geotechnical ConferenceSession: Advanced Testing 2
ABSTRACT: Filtered tailings allow to increase geotechnical stability and minimize footprint of tailings storage facilities. Despite their numerous advantages, they can also contribute to increase the risk for acid mine drainage (AMD) generation. In this research, multicomponent reactive transport simulations were conducted to assess the critical time tailings can remain exposed before AMD generation would start. Laboratory kinetics tests were performed on reactive mine tailings and the evolution of pore water geochemistry was monitored with time. Numerical simulations were calibrated on laboratory tests and then extrapolated for other mineralogies. Results showed that critical time could be predicted, as a function of tailings mineralogy and degree of saturation. A predictive equation to estimate critical time is proposed and discussed in this paper. Predicting critical time could be useful to optimize tailings management and improve the geochemical stability of filtered tailings storage facilities.
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Corentin, Chevalier, Thomas, Pabst (2023) Effect of the degree of saturation and mineralogy on acid generation critical time in GEO2023. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Corentin_GEO2023_95,
author = {{Corentin, Chevalier}, {Thomas, Pabst}}
title = {Effect of the degree of saturation and mineralogy on acid generation critical time }
booktitle = {Proceedings of the 76th Canadian Geotechnical Conference}
year = {2023}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {Effect of the degree of saturation and mineralogy on acid generation critical time }
booktitle = {Proceedings of the 76th Canadian Geotechnical Conference}
year = {2023}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }