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- W50819683 abstract "RESUME Les impacts generes par les changements climatiques representent un alea majeur aux infrastructures hydrauliques existantes ainsi qu’aux plaines inondables.Les etudes d’impacts du climat futur sur les cours d’eau et leurs consequences sur les bâtis existants sont necessaires pour mettre en place des mesures appropriees, en vue de garantir la protection des biens et de la population occupant les zones riveraines contre les risques de debordement des rivieres.La presente etude a vocation theorique a pour objectif principal, l’analyse du comportement de la Riviere-des-Prairies, dans le contexte des changements climatiques. Afin d’evaluer les apports dans le bassin versant en amont de cette riviere, le modele hydrologique Hec-Hms a ete utilise dans l’estimation des debits futurs a partir des precipitations du climat futur (2041-2070). Une modelisation hydraulique de la riviere a ete mise en oeuvre avec le logiciel bidimensionnel Modeleur Hydrosim. La simulation des niveaux d’eau dans le climat 2041-2070 a permis d’identifier les zones vulnerables aux inondations du cote de l’ile de Montreal, et de degager ainsi l’impact du rehaussement du niveau de la riviere sur les ponts enjambant la Riviere-des-Prairies.Les resultats des simulations numeriques effectuees montrent que le rehaussement du niveau de la riviere n’aura pas de consequences majeures sur les ponts, etant donne que les niveaux d’eau dans les sections des ponts sont inferieurs aux elevations des tabliers.Les inondations probables qui seraient causees par les changements climatiques auront un impact majeur sur le terrain montrealais (l’impact des changements climatiques sur les berges du cote de l’ile de Laval n’a pas ete le sujet de la presente etude). Les zones situees du cote amont du barrage d’Hydro-Quebec ainsi que les zones au voisinage du pont Charles-de-Gaulle (extreme partie en aval du barrage) representent les lieux les plus vulnerables quant au risque d’inondation.----------The climate changes constitute the major risk which threatens the floodplains and the infrastructures. The study of the impact of the future climate is important to implement appropriates measures of protection for the property and population. The study of the impacts of the floods associated to a recurrence on Riviere-des-Prairies was studied by authorities and inundation maps have been emerged. However, the study of the impact of future climate on the behavior of rivers constitutes a new subject under study and development.The mean objective of this study is to analyse the impact of future climate on the infrastructure of the Riviere-des-Prairies and the area located in the vicinity of the river in the context of climate change. To assess the contribution of watershed upstream of the river, the hydrological model Hec-Hms was used to estimate future flows discharges based on the transformation of the hyetograph into flows hydrograph for the climate 2041-2070.Hydraulic modeling of the river was done with the 2D software Modeleur Hydrosim. Simulation of water levels in the climate 2041-2070 climate was mapped; delineation of the areas which are considered as the area’s most threaten by inundation and the impact of water rise on the bridges was analyzed.Indeed, water level rise will not have a major impact on the bridges, as water levels in bridges sections are below bridge deck’s elevation. However the climate change might cause the inundation of the most of the land located near the river (Montreal Island). The areas which are located upstream of the dam and near the Charles de Gaulle bridge (extreme part downstream the dam) represent the land`s most vulnerable to the risk of flooding." @default.
- W50819683 created "2016-06-24" @default.
- W50819683 creator A5028938847 @default.
- W50819683 date "2013-07-01" @default.
- W50819683 modified "2023-09-26" @default.
- W50819683 title "ANALYSE DU COMPORTEMENT DE LA RIVIÈRE-DES-PRAIRIES DANS UN CONTEXTE DE CHANGEMENTS CLIMATIQUES" @default.
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- W50819683 hasPublicationYear "2013" @default.
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