浊度仪在映秀湾水电站泥沙浓度监测中的应用

摘要

Based on the advantages and related standards of turbidity method and the characteristics of water and sediment in watershed,an ascattering turbidity meter is designed,which is suitable for sediment concentration monitoring.The turbidity meter has a good repeatability and high accuracy,and there is an obviously linear transformation relationship between turbidity value and sediment concentration when the sediment concentration is in range of 0-3 kg/m3.The application of this turbidity meter in Yingxiuwan Hydropower Station shows that the on-line sediment concentration monitoring system based on this turbidity meter can satisfy the requirements of sediment concentration monitoring and effectively reflect the change trend of sediment concentration in power generation.%利用浊度法的优点和相关标准,结合流域水沙特征,设计了一种可适用于泥沙浓度监测的散射式浊度仪,该浊度仪测量重复性好,准确度高,在泥沙浓度0～3 kg/m3范围内,其浊度测值与泥沙浓度具有良好的线性关系.映秀湾水电站现场应用表明,以该浊度仪为基础建立的泥沙浓度在线监测系统能满足泥沙浓度的监测要求,较好地反映发电水体泥沙浓度的变化趋势.