Ice accumulation at a water intake: a case study on the Mille-Iles River, Québec

Author:

Ghobrial Tadros1ORCID,Pierre Amandine1,Boyd Sean1,Loewen Mark2

Affiliation:

1. Department of Civil and Water Engineering, Laval University, Québec, QC, Canada

2. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB, Canada

Abstract

The blockage of water intakes by ice is recurrent in northern rivers during winter. Previous field studies have monitored field conditions leading to ice blockage and provided a review of mitigations methods. However, to improve the efficacy of these measures, the mechanisms that create the blockage need to be locally measured. For this purpose, a field campaign was implemented to monitor a water intake on the Mille-Iles River at Terrebonne, Quebec, during the winter of 2020–2021. Results from this study showed that ice accumulation on the trash rack had an average growth rate of 1.35 cm/h and reached a maximum thickness of 24 cm. The release rate of these trash rack accumulation events was on average 1.8 cm/h, which is 30% faster than the deposition rate. A minimum cumulative degree minutes of supercooling of 4.5 °C.min was required for the start of a trash-rack ice-accumulation event.

Publisher

Canadian Science Publishing

Subject

General Environmental Science,Civil and Structural Engineering

Reference18 articles.

1. A study of supercooling in rivers

2. Buist L.P. 2020. Technical note. Évaluation des modifications du poste de pompage d'eau brute pour sécuriser la production d'eau potable advenant une inondation. Régie d'aqueduc Intermunicipale, A19-004. 36pp.

3. Ice-Tank and Numerical Study of Frazil Ingestion by Submerged Intakes

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1. Preface to the special issue on river ice and infrastructure;Canadian Journal of Civil Engineering;2024-02-01

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