泥沙粒配对水流挟沙力影响的试验研究

Experimental Study on Influence of Sand Graduation Upon Sand Carrying Capacity of Flow

通过水槽试验研究和实例资料分析，证明泥沙粒径级配确实是影响水流挟沙力计算的重要因素。级配越宽，细颗粒泥沙所占的比重越大，则在同等水力条件下水流挟沙力越大。

Through series of flume experiments and the analysis of natural river data, it was proved that the sand graduation is really an important factor which effects the computation of sand carrying capacity of flow. The wider the sand graduation and the bigger the weight ratio of the fine sands, the bigger the sand carrying capacity of flow in the same hydraulic dynamic condition.