黄河悬移质泥沙粒度分布动态图像法的应用评价

Application of Dynamic Image Method in Analysis of Particle Size Distribution of Suspended Sediments in the Yellow River

采用动态图像法和激光法对黄河干流悬移质泥沙样品进行泥沙粒度分析,构建了动态图像法与激光法粒度成果之间的相关性。利用激光粒度分析技术得出粒度分布的中值粒径D50,再利用粒度粒形分析技术分析,结果显示动态图像法粒度成果与激光法粒度成果在不同级配之间的关系基本一致,动态图像法获得的粒度分布的D50通常大于激光法获得的D50。

The dynamic image and the laser diffraction were used to analyze the suspended sediment samples particle size of the Yellow River.And then the correlation between the particle size distribution obtained by the laser diffraction and those obtained by the dynamic image was constructed.The median particle diameter(D50)of the particle size distribution was obtained by the laser diffraction.The results of QICPIC analysis show that the relationship between the dynamic image data and the laser diffraction data for different size fractions is almost the same;the median particle diameter of the particle size distribution obtained by the dynamic image is usually larger than that of the laser diffraction.