Experimental Test of Debris Flow Initiation Model

泥石流引发模型实验测试

• 批准号: 9610269
• 负责人: David Montgomery
• 金额: $ 21.93万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-10-01 至 2000-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9610269&HistoricalAwards=false
• 关键词: Experimental; Test; Debris; Flow; Initiation

9610269 Montgomery Shallow landslides repeatedly cause loss of life, injury, and economic and environmental damage in the mountainous regions of the country and the world. Assessment of slope instability and debris flow initiation is the topic of this project in which four main issues will be addressed: (1) determining the input parameters for use in physically based slope stability models: (2) testing of predictions of the rainfall required to trigger landsliding and mobilization of a debris flow; (3) identifying the deformation mechanisms that produce debris flows: and (4) modeling long-term erosion rates by shallow landsliding. The data generated in the initial field work will be used in developing a deterministic slope stability model. The resulting predictions will be tested in a field experiment designed to trigger slope failure. The results will then be used to guide stochastic modeling and empirical studies for establishing long- term models of sediment transport by landsliding, and hence for identifying risk. The results of this project will demonstrate the utility and limits of models representing field conditions which in turn can be sued to assess and mitigate this hazard. ***

蒙哥马利浅层滑坡在美国和世界的山区反复造成生命损失、伤害以及经济和环境破坏。 本项目的主题是评估边坡不稳定性和泥石流的发生，其中将涉及四个主要问题：（1）确定用于物理边坡稳定性模型的输入参数;（2）测试触发滑坡和泥石流活动所需的降雨预测;（3）识别产生泥石流的变形机制：（4）模拟浅层滑坡的长期侵蚀速率。 在最初的现场工作中产生的数据将用于开发确定性边坡稳定性模型。 由此产生的预测将在一个旨在触发边坡破坏的现场实验中进行测试。 研究结果将用于指导随机建模和经验研究，以建立滑坡泥沙输运的长期模型，从而识别风险。 该项目的结果将证明代表现场条件的模型的实用性和局限性，这些模型又可用于评估和减轻这种危险。 ***