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非均匀沙推移质输沙率是生产中的一个重要问题，由于测验困难，许多河流尚无系统的原型观测资料。目前计算非均匀推移质输沙率的公式相差较大，难以得到统一的结论。本文利用实验及实测资料分析推移质输沙率的脉动特性，用负幂律分布进行描述，表明具有一定的普遍性。
Non-uniform sand transport Sediment transport rate is an important issue in production. Due to the difficulty of testing, there is no systematic prototype observation data for many rivers. At present, the formula for calculating the sediment transport rate of non-uniform bedrock is quite different and it is hard to get a unified conclusion. In this paper, the pulsation characteristics of bed load sediment transport rate are analyzed by experiment and measured data, which is described by the negative power law distribution, indicating that it has certain universality.