Frozen Dams in Permafrost Regions - Mine Water Solutions

Lessons Learnt – Case Histories• Modern frozen core dams have advanced significantly since inception in late 18 th century• Value in winter construction with passive coolingo eg., Garrow Lake, Kubaka, West (Jericho) and Ekati Dams• Thermal modeling of frozen damso Guidance on active or passive freezing and insulation requirements• Ground freezing technology advancements• Common problems with early frozen dams:o Thermal erosion of spillways (eg., Irelyakh) or due to summer repairs (eg., Petrovsk)o Dams constructed thawed did not freeze as planned (eg.,Dolgoyle, Anadyr’)