If they do not have the magnitude of that experienced in La Baie, in Saguenay, Sherbrooke is not immune to ground movement. The latter are not left to chance, underlines the coordinator of the municipal organization of civil security Stéphane Simoneau.
We have a territory that looks alike [à la Baie] in terms of vulnerabilityhe remarks.
In August 2018, two residences had to be evacuated on rue Alfred Desrochers. During that time, we had to do a bit the same thing as what is happening in Saguenay. Evacuation of houses during the evaluation, drilling, knowing the composition of the soil, and after that having a permanent solutionrecalls Stéphane Simoneau.
In January 2016, a landslide also forced an intervention by the Quebec Ministry of Transport near Route 143, in Lennoxville. Here, we move on to an emergency file. Obviously, the teams of engineers descend quickly from the Ministry of Transport to assess the level of dangerreports Mr. Simoneau.
The Ville de Sherbrooke is also currently updating its map of areas exposed to landslides based on new criteria.
Now we ask ourselves the question “what is causing the phenomenon?” It may be that there are no consequences for another house, but we must necessarily have the reflection if it is not the overall plan or the neighborhood plan that means that it could happen again .
The topography and the composition of the soil make it possible in particular to characterize the zones at risk, explains the professor emeritus in geomorphology retired at the University of Sherbrooke Jean-Marie Dubois. Many factors can cause slippage.
It is an additional water supply, it can be vibrations, or a backfill on fine sedimentshe says.
Even if Sherbrooke is not at high risk, landslides remain a priority intervention for its teams.
With information from René-Charles Quirion
Radio Canada
Source: Radio-Canada