Florence Lanouette

Position : Master student

Supervisor : Guy Doré (U. Laval)
Cosupervisor : Daniel Fortier

Main Address:
Département de génie civil et de génie des eaux
Pavillon Adrien Pouliot

Université Laval
1065 avenue de la Médecine
Québec, Qc, G1V 0A6
Local 2966

 

Courriel : Florence.Lanouette.1@ulaval.ca

 

Project title:

Development of a design procedure for linear transportation infrastructures taking into account accumulation of snow along embankment built on permafrost

 

Description of the project research : 

In northern regions, transport infrastructures are vital for the subsistence, the economic development and the maintaining of a quality of life of communities. However, their building induces temperature disturbance at the surface of the ground. Combined with climate changes, this thermal equilibrium modification causes the degradation of permafrost underlying. Then, the bearing capacity of the subgrade is affected and significant settlement can cause substantial damages to the infrastructures. After their building, roads and airstrips produce an obstacle to the wind favouring accumulation of snow along the embankment according to the prevailing winds direction. The maintenance also contributes to the accumulation of the snow. This thickening of the snow cover raises heat retention in the ground because of the insulated properties of the snow. In winter, the ground could not cool down as much as before and, with time, the permafrost will degrade. The objective of this research is to elaborate a design procedure taking into account the impact of snow accumulation along embankments built on permafrost. The instrumentation and the monitoring of the thermal regime at two roads test were necessary. One is in Tasiujaq, Nunavik, and the other is in Beaver Creek, Yukon. The collected data are used to calibrate a 2D thermal model quantifying the energy balance at the interface between snow and ground surface. Then, different simulations allow to quantify the impact of the slope angle of the embankment on the thermal regime of the ground.

 

Keywords :
permafrost, transportation infrastructures, thermal regime, snow

 

Papers :

Lanouette, F., Doré, G., Fortier, F. 2015. Influence of snow cover on the ground thermal regime along an embankment built on permafrost: In-situ measurements, 68th Canadian geotechnical conference and 7th Canadian Permafrost Conference, Quebec, Canada.

 

Conference posters : 

Lanouette, F., Doré, G., Fortier, F. 2015. Influence of snow cover on the ground thermal regime along an embankment built on permafrost: In-situ measurements, 68th Canadian geotechnical conference and 7th Canadian Permafrost Conference, Quebec, Canada, September 2015.

 

Scholarships and awards :

2015: Northern Scientific Training Program Travel Grant, Canadian Polar Commission
2014: Northern Scientific Training Program Travel Grant, Canadian Polar Commission
2014: Interdisciplinary Research Fellowships, Environorth
2014: Northern Research Field Schools, Environorth

Affiliations :

Centre for Northern Studies
Programme ARQULUK

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