泥石流输砂能耗及运动速度与阻力的计算方法

泥石流由于其固体浓度高，物质组成的粒径范围很宽、运动机理十分复杂，因而泥石流治理实际工作中急需解决的问题，如泥石流运动速度及阻力等的计算，迄今未能取得满意的结果。本文根据泥沙运动力学理论，分析泥石流中不同粒径固体运动形式及其消耗，从宏观的能量角度提出各类泥石流的运动速度与阻力计算的新途径，其结果可供实际工作者参考应用。

Calculation of energy dissipation, resistance and velocity of debris flow

Because of the high concentration and broad grain composition, the mechanism of debris flow is very complicated. The urgent problems in debris flow control, such as the calculations of debris flow resistance and velocity, are not perfectly solved up till now. In this paper, according to the theory of sediment transport mechanics , the movement types and energy dissipation of different size grains were analysed, the new calculation methods of the resistance and velocity of all types of debris flows were proposed from the angle of macroscopic energy, and the results could be applied to debris flow practice.