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57ime CONGRS CANADIEN DE GOTECHNIQUE 57TH CANADIAN GEOTECHNICAL CONFERENCE 5ime CONGRS CONJOINT SCG/AIH-CNN 5TH JOINT CGS/IAH-CNC CONFERENCE
 

Summary: 57ième CONGRÈS CANADIEN DE GÉOTECHNIQUE 57TH CANADIAN GEOTECHNICAL CONFERENCE
5ième CONGRÈS CONJOINT SCG/AIH-CNN 5TH JOINT CGS/IAH-CNC CONFERENCE
EVALUATION OF UNSATURATED FLOW IN MINE WASTE ROCK
Vincent Martin, École Polytechnique, Montréal, Canada
Michel Aubertin, École Polytechnique, Montréal, Canada
Bruno Bussière, Université du Québec en Abitibi-Témiscamingue, Rouyn-Noranda, Canada
Robert P. Chapuis, École Polytechnique, Montréal, Canada
ABSTRACT
This project consists in studying some key hydrogeological properties of mine waste rocks and to evaluate the factors that
influence flow of water in these materials. The aim is to improve characterization methods in the field and in the lab and to
develop more representative models. The field work helped better understand the effect of surface layers compacted by
heavy machinery on the pile hydrogeology. Laboratory tests showed that the coarse grain fraction (diameter greater than 5
mm) can play a significant role in the value of the saturated hydraulic conductivity and the water retention curve. Numerical
calculations were performed to investigate the unsaturated flow conditions in the pile, for various configurations and
properties. The numerical models, which were based on a typical geometry for waste rock dumps, showed that the water
entry value of the materials can play an important role in the amount of infiltration into the pile.
RÉSUMÉ
Ce projet visait à étudier les propriétés hydrogéologiques des stériles miniers et à évaluer les facteurs qui influencent
l'écoulement de l'eau dans les empilements de stériles. On veut ainsi améliorer la caractérisation de ces matériaux sur le
terrain et dans le laboratoire pour obtenir des résultats de modélisation numérique plus représentatifs. Les travaux sur le

  

Source: Aubertin, Michel - Département des génies civil, géologique et des mines, École Polytechnique de Montréal

 

Collections: Engineering; Environmental Management and Restoration Technologies