Yukon

A test section of a road is the subject of diverse research in partnership with Transport Canada at Beaver Creek, Yukon. The tests focus on mitigation methods to minimize the thermal impact of the road on permafrost. The Geocryolab has already demonstrated that the convective heat transfer of water flow under the road leads to a deepening of the active layer during summer, generating differential settlement and accelerated degradation of the road. During early 2011 summer, a ditch was dug in order to alter the water flow path. The lab is currently evaluating the impacts of the excavation on permafrost stability and on the hydrographic network reorganisation.

Ce message est également disponible en : French