Abstract

The erosive capacity of slope water flows, a key parameter in the quantitative assessment of soil erosion, is defined as the difference between the transporting capacity of the flow and the total content of its suspended load and bedload. Therefore, it is necessary to assess the factors and intensity of soil aggregates attrition in the water flow that determine the shares of suspended and dragged particles in the sediment load. The earlier simulation of the attrition of river sediments (H. Sternberg) and soil aggregates (G.I. Shvebs) fail to fully reflect the condition of interaction between soils and slope flows. The further attempts to describe the attrition process using empirical dependences have not given any significant improvements. A fundamentally different model of particle attrition based on the laws of mechanics allows us to describe the attrition of soil aggregates broken away by water flow differentiating the total load between the bedload and suspended load. The experimental verification of the model calculations appears to be satisfactory.

中文翻译：

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坡面土壤团聚体的磨损模型

摘要

坡面水流的侵蚀能力是土壤侵蚀定量评估中的关键参数，其定义为水流的运输能力与其悬浮负荷和床负荷的总含量之间的差。因此，有必要评估水流中土壤团聚体磨损的因素和强度，这些因素和强度决定了沉积物负荷中悬浮颗粒和拖曳颗粒的份额。早期的河流沉积物（H. Sternberg）和土壤团聚体（GI Shvebs）损耗模拟无法完全反映土壤与斜坡流之间相互作用的条件。使用经验相关性描述磨损过程的进一步尝试并未带来任何重大改进。基于力学定律的根本不同的颗粒磨损模型使我们能够描述由于水流而破坏的土壤聚集体的磨损，从而区分了床载荷和悬架载荷之间的总载荷。模型计算的实验验证似乎是令人满意的。