不均匀高浓度颗粒流动的极限浓度研究

本文从不均匀高浓度颗粒流动的几何特性出发，应用随机分析方法导出了极限浓度的计算公式；针对天然条件下缺乏细颗粒级配资料的情况，应用统计推断的方法估计了细颗粒级配的均值，为极限浓度的计算提供了依据，所有的理论结果都应用到黄河悬沙和蒋家沟泥石流的计算中，所得计算结果与实测资料符合较好。

Study on limiting concentration of non-uniform particle flow

From the geometrical character of non-uniform particle flow, the paper deduces the formula of limiting concentration by stochastic analysis. For lacking of fine particle gradation in nature,the average value of line particle is estimated by statistical inference. All theoretical results have been applied to the calculations of sediment laden flow in the Yellow River and the Jiangjiagou debris flow, and a good agreement between the calculation and the field data has been obtained.