A On-Site Monitoring System of Reservoir Sediment for Three Gorges

Abstract

The On-site reservoir sediment monitoring system plays a very important role in the reservoir operation and the sediment research. The LISST-100X (Laser On-site Scattering and Transmissometer-100X) is able to obtain the information of the sediment concentration, the sediment gradation, and the water temperature at the dam’s upstream and downstream rapidly and precisely, therefore it has been applied to the Three Gorges Water Project Reservoir Sediment Monitoring System. The real-time sediment data collected by the system can be immediately uploaded to the Control Center and consequently taken as the support for the realtime schedule of the project, providing a guarantee for the reservoir operation center to fully and timely receive the hydrology and sediment information. This paper studies some key technologies of the system in the building-up process and reach some valuable experience of the data analysis, the sediment concentration calculation, and the design of the system, which finally helps obtain some useful results. The system could the future of On-site reservoir sediment monitoring system in China.