Inflows in uranium mines of northern Saskatchewan: Risks and mitigation

CIM Journal, Vol. 4, No. 2, 2013
R. Bashir Golder Associates, Saskatoon, Saskatchewan and Department of Civil & Geological Engineering, University of Saskatchewan, Saskatoon, SK J. F. Hatley Cameco Corporation, Saskatoon, SK
Abstract



Northern
Saskatchewan boasts some of the world's largest known high-grade uranium
deposits.  The successful mining of
these deposits cannot be accomplished without overcoming technical challenges,
however, which include high grade of the uranium ore, specialized mining methods
to deal with groundwater at high pressures, and poor ground conditions.  This paper discusses the various
mechanisms of inflows at three of Cameco Corporation’s sites in northern
Saskatchewan.  The risk of inflows
is quantified in terms of unique challenges due to hydrogeological conditions,
rock mass integrity, and uncertainty in geological conditions.  Mitigation strategies in case of an
inflow are also briefly described
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