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Permanent link (DOI): https://doi.org/10.7939/R3NZ8115Q

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Structural and Hydrologic Characterization of Two Historic Waste Rock Piles Open Access

Descriptions

Other title
Subject/Keyword
acid rock drainage
ARD
waste rock
digital image processing
waste rock hydrology
geotechnical
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Cash, Aileen E
Supervisor and department
Wilson, G. Ward (Geotechnical and Geoenvironmental Engineering)
Examining committee member and department
Sego, Dave (Emerit, Geotechnical Engineering)
Wilson, G. Ward (Geotechnical and Geoenvironmental Engineering)
Ulrich, Ania (Environmental/GeoEnvironmental Engineering)
Department
Department of Civil and Environmental Engineering
Specialization
Geoenvironmental Engineering
Date accepted
2014-08-12T13:32:46Z
Graduation date
2014-11
Degree
Master of Science
Degree level
Master's
Abstract
Mine waste rock is one of the largest waste streams produced from precious metal mining that must be managed over the long-term. Of particular concern is the management of chemical oxidation of sulphide minerals termed acid rock drainage (ARD). This thesis presents a field and laboratory investigation of two historic waste rock stockpiles at Detour Lake Mine in Ontario, Canada. 100 physical samples and in situ measurements of unsaturated conditions were collected. Laboratory analyses determined particle size distribution and unsaturated and hydraulic characteristics. Digital image processing techniques evaluated large scale grain size, porosity, and water storage capacity. The stockpiles were unsaturated, clast supported structures with features typical of end-tipped deposition. On average, 17% of the material was <4.75 mm, where unsaturated water flow dominates. For water flow in matric fines of <4.75 mm, the estimated average residence time was 200 days to 1.1 years assuming 100% infiltration. Observations can support geochemical mass transport models to assist in future ARD predictions. ii
Language
English
DOI
doi:10.7939/R3NZ8115Q
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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