映秀湾水电站地处岷江山区河段，河流常携带大量泥沙进入发电水体，对水电站水轮机组的安全运行带来了巨大隐患。本文基于映秀湾水电站发电水体的水质情况，研究了其泥沙特性，并根据水体浊度的测量原理，设计和建立了一套泥沙含量在线监测系统，实现了浊度和泥沙含量的实时监测。现场应用表明，系统的泥沙含量测值与实验室分析的结果趋势一致，能够较好的反映发电水体的泥沙含量变化趋势，可为水电站的调度决策提供信息支撑，具有较高的应用前景和推广价值。

Yingxiuwan Hydropower Station is located in the mountainous area of Minjiang River. The river often carries a large amount of sediment into power generation water, which brings a tremendous hidden danger to the safe operation of hydraulic turbines. In this paper, based on the water quality of Yingxiuwan Hydropower Station, we studied the sediment characteristics of power generation water, and a monitoring system for sediment concentration was designed and established according to the principle of turbidity measurement, which realized the on-line monitoring of turbidity and sediment concentration. The application shows that the measured value of sediment concentration is consistent with the result of the laboratory analysis. It can effectively reflect the variation trend of sediment concentration in power generation water, and provide information support for the dispatching decision-making, which has a good prospect of application and extension.