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British Columbia Mine Reclamation Symposium

Prediction of acid rock drainage : Red Mountain Project, northwestern British Columbia Frostad, Scott; Klein, Bern; Lawrence, Richard W.

Abstract

A kinetic ARD prediction program was conducted for the Red Mountain project, located in northwest British Columbia, to provide the operators with more precise prediction data and thereby allow for a more cost effective and confident development of the waste management plan. Kinetic tests such as humidity cells are widely used in an attempt to predict the rates of acid generation and neutralization, water quality and time to onset of acidity. Laboratory kinetic tests at the University of British Columbia evaluated the effects of testing under various conditions. The laboratory test results were compared to 20-tonne (field) test results to evaluate scaling up of laboratory data. Test results indicate that non-aerated cells provide rates of weathering that are similar to the standard humidity cell and that the results are more repeatable than humidity cell results. The laboratory rates of weathering could not be scaled up to predict field results with confidence. The inability to scale up the results is believed to be caused by inadequate hydrogeological assumptions and deficiencies in the experimental protocols.

Item Metadata

Title
Prediction of acid rock drainage : Red Mountain Project, northwestern British Columbia
Creator
Frostad, Scott; Klein, Bern; Lawrence, Richard W.
Contributor
British Columbia Mine Reclamation Symposium; University of British Columbia. Norman B. Keevil Institute of Mining Engineering
Date Issued
1999
Description
A kinetic ARD prediction program was conducted for the Red Mountain project, located in northwest British Columbia, to provide the operators with more precise prediction data and thereby allow for a more cost effective and confident development of the waste management plan. Kinetic tests such as humidity cells are widely used in an attempt to predict the rates of acid generation and neutralization, water quality and time to onset of acidity. Laboratory kinetic tests at the University of British Columbia evaluated the effects of testing under various conditions. The laboratory test results were compared to 20-tonne (field) test results to evaluate scaling up of laboratory data. Test results indicate that non-aerated cells provide rates of weathering that are similar to the standard humidity cell and that the results are more repeatable than humidity cell results. The laboratory rates of weathering could not be scaled up to predict field results with confidence. The inability to scale up the results is believed to be caused by inadequate hydrogeological assumptions and deficiencies in the experimental protocols.
Extent
485827 bytes
Genre
Conference Paper
Type
Text
File Format
application/pdf
Language
eng
Date Available
2009-06-25
Provider
Vancouver : University of British Columbia Library
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International
DOI
10.14288/1.0042338
URI
http://hdl.handle.net/2429/9634
Affiliation
Applied Science, Faculty of; Mining Engineering, Keevil Institute of
Peer Review Status
Unreviewed
Scholarly Level
Other
Copyright Holder
British Columbia Technical and Research Committee on Reclamation
Rights URI
http://creativecommons.org/licenses/by-nc-nd/4.0/
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DSpace

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Attribution-NonCommercial-NoDerivatives 4.0 International