A Physical Basis for Real-Time Debris Flow Warning Systems

实时泥石流预警系统的物理基础

• 批准号: 9211927
• 负责人: Scott Anderson
• 金额: $ 7万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-15 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9211927&HistoricalAwards=false
• 关键词: Physical; Basis; Real; Time; Debris

A field site in a debris flow source area will be instrumented with tensiometers and rainfall recording instruments with data being collected by a remote, real- time data logger configured to record a highly transient reponse. A saturated-unsaturated flow model will be calibrated and later used to measure effective stresses during heavy rainstorms, the influence of antecedent soil moisture, rainfall intensity and duration, and the distribution of hydraulic conductivity of the soil. The effective stress response, together with strength data, the volume change, and the stress- strain behavior of the soil, will be used to develop a model for rainfall-induced debris flow and landslides prediction and a real- time warning system. In areas prone to landslides and debris flows an enhanced capability for prediction and warning would increase safety of populations at risk.

泥石流现场 源区域将被检测 用张力计和降雨量 记录数据的仪器 被一个遥远的，真实的- 时间数据记录器配置为 记录下一个非常短暂的反应 饱和-非饱和水流模型 将被校准， 来测量有效应力 在暴雨期间， 先成土影响 湿度、降雨强度和 持续时间，以及 土壤的导水率。 有效的应激反应， 连同强度数据， 体积的变化，以及压力- 土壤的应变行为，将 被用来开发一个模型， 泥石流 滑坡预测和一个真实的- 时间预警系统 地区 容易发生山体滑坡和泥石流 流动增强的能力， 预测和预警将 提高人口安全， 风险