Evaluation of the shallow water ice profiling sonar for measuring frazil ice

浅水冰剖面声纳测量碎冰的评价

• 批准号: 353784-2007
• 负责人: Loewen, Mark
• 金额: $ 1.16万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=431411
• 关键词: Evaluation; shallow; water; ice; profiling

The formation of an ice cover in a river is quite different from that on a lake because of the river's current. The turbulence in the flow causes the formation of a special kind of ice particle, known as frazil ice, which is very 'sticky' when first formed. These frazil particles tend to stick to each other, to metal screens and racks at water intakes, to rocks on the river bed, and even to vegetation in the river. This can be a serious problem for hydro-power utilities as well as for municipal and industrial water supplies, since large accumulations of frazil can completely block the intakes, forcing plants to shutdown. These disruptions to power systems and water supplies have significant socioeconomic costs.

由于河流的水流，河流中冰层的形成与湖泊上冰层的形成有很大的不同。 水流中的湍流导致了一种特殊的冰粒的形成，称为frazil冰，它在最初形成时非常“粘性”。 这些冰碴颗粒往往会相互粘附，粘附在进水口的金属筛网和支架上，粘附在河床上的岩石上，甚至粘附在河里的植被上。 这对水力发电设施以及市政和工业供水来说可能是一个严重的问题，因为大量积累的冰渣会完全堵塞进水口，迫使工厂关闭。 电力系统和供水的中断造成了巨大的社会经济成本。