Author(s): Andrew Liddiard; Razek Abdelnour; Raymond-Marie Tremblay; Tung Thanh Quach; Brian Morse
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Abstract: A prototype ice boom has been deployed in the Riviere des Prairies in Montreal, Quebec, Canada. The section of river generates a significant amount of frazil ice and has a high current velocity such that a conventional boom would be ineffective much of the time. The new design consists of deploying floating nets downstream of round steel pontoons to assist in the formation of an ice cover. The winter of 2001/02 was thewarmest on record since 1949 and had a higher discharge than average. Despite this, a partial ice cover was formed on the boom and nets. Following an analysis of historical data for years when an ice cover formed naturally, and looking at the data collected over the course of the 2001/02 winter, a new boom configuration is being developed. There is good reason to believe that the improved boom design will allow a stable ice cover to form across the width of the river at this particular section of the river (Figure 1).
Year: 2002