基于激光粒度仪的悬移质泥沙颗粒级配试验研究  

Experimental study on particle gradation of suspended sediment based on laser particle size analyzer

作　　者：吴文 刘铁林 茶映鹏 WU Wen;LIU Tielin;CHA Yingpeng(Fuhe Hydrology and Water Resources Monitoring Center,Fuzhou 344000,China;Jiangxi Provincial Hydrology Monitoring Center,Nanchang 330000,China;Nanchang Institute of Technology,Nanchang 330099,China)

机构地区：[1]抚河水文水资源监测中心,江西抚州344000 [2]江西省水文监测中心,江西南昌330000 [3]南昌工程学院,江西南昌330099

出　　处：《水利水电快报》2024年第7期13-17,共5页Express Water Resources & Hydropower Information

基　　金：江西省教育厅科技项目(GJJ211911)。

摘　　要：为探究国产激光粒度仪应用于悬移质泥沙颗粒级配分析时的准确性及适用性,以赣江外洲水文站为例,利用国产YRCC.NEG-2800型激光粒度仪和马尔文激光粒度仪对河流泥沙开展了准确性、重复性、平行性试验,并采用最小二乘法分析了两者试验结果的相关关系。结果表明:国产激光粒度仪的准确性、重复性、平行性误差小于3%,达到SL 42-2010《河流泥沙颗粒分析规程》要求,可应用于江西省河流悬移质泥沙颗粒级配分析。国产激光粒度仪与马尔文激光粒度仪的比测误差小,测试样本中最大误差仅为1.12%,分析的成果精度高。In order to explore the accuracy and applicability of the domestic laser particle size analyzer in the analysis of suspended sediment particles,the accuracy,repeatability and parallelism tests of river sediment were carried out by using the domestic YRCC.NEG-2800 laser particle size analyzer and Malvern laser particle size analyzer at Waizhou Hydrological Station in Ganjiang River.We used the least square method to analyze the correlation between the two test results.The results showed that the accuracy,repeatability,and parallelism error of the domestically produced laser particle size analyzer were less than 3%,which met the requirements of SL 42-2010 Regulations for River Sediment Particle Analysis,and YRCC.NEG-2800 laser particle size analyzer could be applied to the analysis of suspended sediment particle size distribution in rivers in Jiangxi Province.The comparison error between domestic laser particle size analyzer and Marvin laser particle size analyzer was small,and the maximum error in the test sample was only 1.12%.YRCC.NEG-2800 laser particle size analyzer has a high accuracy according to the analysis results.

关 键 词：颗粒级配 悬移质 激光粒度仪 最小二乘法 外洲水文站 赣江 

分 类 号：TV142[水利工程—水力学及河流动力学]