Frozen Core Dam Performance: Four Years Post Construction

Megan Miller, Maritz Rykaart
Tuesday, October 18, 2016
First presented: 
Canadian Dam Association Conference
Published paper

As part of the tailings management system for the Doris Project in Nunavut Canada, a frozen core dam was constructed in 2012 on a foundation of thick ice-rich, saline glacial marine silt and clay, and fine sand. This dam will not have a tailings beach against it, and as a result has been designed as a water retaining dam for its design life of 20 years. Environmental containment is provided by a frozen core keyed-in, and permanently bonded with the underlying permafrost. To ensure this bond, the engineered (non-saline) frozen core must maintain a temperature below -2°C, and the underlying saline permafrost foundation must be at or below -8°C, under normal operating conditions. To ensure continued successful performance of the dam it has been rigorously instrumented and this paper describe the dam performance four years post construction.

SRK United Kingdom