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首页> 外文期刊>Frontiers in Digital Humanities >Modeling of debris flow depositional patterns according to the catchment and sediment source area characteristics
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Modeling of debris flow depositional patterns according to the catchment and sediment source area characteristics

机译：根据集水区和沉积物源区特征模拟泥石流沉积模式

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摘要

A method to predict the most probable flow rheology in Alpine debris flows is presented. The methods classifies outcropping rock masses in catchments on the basis of the type of resulting unconsolidated deposits. The grain size distribution of the debris material and the depositional style of past debris flow events are related to the dominant flow processes: viscoplastic and frictional/collisional. Three catchments in the upper Susa Valley (Western Alps), characterized by different lithologies, were selected for numerical analysis carried out with a Cellular Automata code with viscoplastic and frictional/collisional rheologies. The obtained numerical results are in good agreement with in site evidences in terms of depositional patterns, confirming the possibility of choosing the rheology of the debris flow based on the source material within the catchment.
机译：提出了一种预测高山泥石流中最可能的流变学的方法。该方法根据未固结沉积物的类型对流域露头岩体进行分类。碎屑材料的粒度分布和过去的泥石流事件的沉积方式与主要的流动过程有关：粘塑性和摩擦/碰撞。选择了苏萨河谷上游（西阿尔卑斯山）的三个流域，以不同的岩性为特征，用具有粘塑性和摩擦/碰撞流变学的Cellular Automata代码进行了数值分析。所获得的数值结果与沉积形式方面的现场证据非常吻合，证实了根据集水区内的原料选择泥石流的流变性的可能性。

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