Channel-forming discharge estimation for stream restoration design

用于河流恢复设计的河道形成流量估算

• 批准号: 249663-2008
• 负责人: Guo, Yiping
• 金额: $ 1.46万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=547351
• 关键词: Channel; forming; discharge; estimation; stream

Rivers support precious aquatic ecosystems. Continued urban development and agricultural practices cause many river banks to collapse and aquatic ecosystems to degrade. In an effort to save as many diverse aquatic ecosystems as possible, communities across North America are undertaking millions of stream restoration projects per year. In the U. S. alone, it is estimated that about $1 billon a year is spent on these restoration projects since 1990. Many of these restoration projects failed despite the huge expenses. The reason for the majority of these failures is the wrong or inaccurate estimation of one important design parameter, known as the channel-forming discharge. The main objective of the proposed research is to develop more accurate approaches for the estimation of channel-forming discharges. This will be accomplished through data collection and analysis, mathematical model development and testing, as well as computer simulation.

河流支撑着宝贵的水生生态系统。 持续的城市发展和农业实践导致许多河岸崩溃和水生生态系统退化。 为了尽可能拯救多样化的水生生态系统，北美各地的社区每年都在开展数百万个溪流恢复项目。 据估计，自 1990 年以来，仅在美国，每年在这些修复项目上花费的费用就约为 10 亿美元。尽管花费巨大，但许多修复项目还是失败了。 大多数失败的原因是对一个重要设计参数（称为通道形成放电）的错误或不准确估计。 本研究的主要目标是开发更准确的方法来估计河道形成放电。 这将通过数据收集和分析、数学模型开发和测试以及计算机模拟来完成。