浊度仪在泥沙测验中的应用研究

Preliminary Application of Turbidimeter in Sediment Measurement

摘要: 精准及时的泥沙采样，是提高泥沙预报精度和时效的基础，分析了当前三峡水库入库泥沙观测的工作难点，从水体浊度与悬移质单沙存在相关关系入手，通过收集横江水文站2017年多次涨落水期间的浊度资料和单沙资料，对现有浊度~单沙关系式(推荐关系式)的计算精度进行了分析，发现有较大误差。用实测资料建立了新的关系式，并用2018年的实测资料对新关系式进行了检验，结果表明仍然有较大误差。最后对误差成因进行了初步分析,以期促进含沙量测验技术的进步。

Abstract: Accurate and timely sediment sampling is the basis for improving the accuracy and efficiency of sedi-ment prediction. Based on the correlation between turbidity and single suspended sediment, turbidity data and single sediment data of Hengjiang hydrological station are collected during multiple fluctua-tions in 2017. The calculation accuracy of the existing turbidity-sediment relationship (recommended relationship) is analyzed and large error is found. A new relation is established with the measured data and tested with the measured data in 2018. The result shows that the error is still large and the cause of error is preliminarily analyzed in order to promote the progress of sediment concentration test technology.