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Prevention and Mitigation of Debris Flow Hazards by Using Steel Open-Type Sabo Dams

机译：使用钢制开放式Sabo水坝预防和减轻泥石流危害

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摘要

This paper presents the findings of an investigation on the prevention and mitigation of debris flow hazards by using steel open-type dams. First, the actual cases of trapping hazardous debris flow by steel open-type dams were surveyed. Through a field survey of actual cases, we classified them into four distinct scenarios based on the trapping type of debris flow: Scenario A (wooden debris + rocks + sediment), Scenario B (wooden debris + sediment), Scenario C (rocks + sediment) and Scenario D (wooden debris only). Second, recent trapping cases on protection and mitigation by various steel open dams were introduced. Third, trapping scenarios A, B, C and D were confirmed by performing physical model tests. Finally, a safety check of a steel open dam against a large rock was verified by two impact analyses, the finite element method (FEM) impact analysis using ANSYS Autodyn software, and the three dimensional (3-D) impact frame analysis.
机译：本文介绍了使用钢制开放式大坝预防和减轻泥石流危害的调查结果。首先，调查了由钢制开放式水坝截留危险泥石流的实际案例。通过对实际案例的现场调查，我们根据泥石流的捕获类型将它们分为四个不同的场景：方案A（木屑+岩石+沉积物），方案B（木屑+沉积物），方案C（岩石+沉积物） ）和方案D（仅限木屑）。其次，介绍了近期有关各种钢制开放式水坝进行保护和缓解的诱捕案例。第三，通过执行物理模型测试确认了陷阱情景A，B，C和D。最后，通过两次冲击分析，使用ANSYS Autodyn软件进行的有限元方法（FEM）冲击分析以及三维（3-D）冲击框架分析，验证了对大岩石的开放式钢坝的安全检查。

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