摘要：黄河泥沙颗粒级配是研究水利工程及河床演变中泥沙问题的基本资料 ,黄河泥沙颗粒级配分析是一项重要的基础性研究工作。本文结合引进国际先进的激光粒度分析仪 ,开发应用于黄河泥沙颗粒分析工作的实际 ,研究解决了激光法测量泥沙级配资料换算到传统法测量泥沙级配资料的问题 ,探讨运用数学回归的方法 ,建立了回归数学公式 ,并对其合理性进行了检验分析 ,为保证黄河历史泥沙颗粒分析资料的连续性、完整性、一致性开展了探索性工作。

关键词： 颗粒分析；黄河泥沙；数学模型

Abstract：T he sediment particle distribution in the Yellow River is the important data to study sediment problems on water conservancy project and fluvial process，the analysis of the sediment particle distribution is an important work of basic research． Combining the international advanced laser particle analyzer introduced to develop and apply in the analysis of the sediment particle distribution of the Yellow River，the problems converting the sediment particle distribution of laser into the traditional sediment particle distribution are researched and solved the regression mathematical method is discussed and the regression mathematical model is establishsed．T heir rationality is checked in order to assure the continuity and integrality and the consistence of the sediment particle distribution of the Yellow River． 

Keywords： particle analysis；sediment in the Yellow River； mathematical model