Trajectory of sediment deposition at the bottom of water intake structures of pumping stations

Abstract

The study of the causes and patterns of sediment deposition at the bottom of water intake structures of pumping stations, the negative impact of sediments on the efficiency of their operation is one of the important measures taken to improve the efficiency of the water recovery system. The issues of studying the determination of the deposition rate and the trajectory of solid particles at the bottom of structures were analyzed, and the main shortcomings and shortcomings in determining the parameters of particle deposition were identified. An equation is proposed that allows determining the trajectory of solid particles deposition taking into account their concentration in the flow, the main properties (density, geometric parameters) of particles and water flow, as well as the design dimensions of the pump station’s advance chamber. The obtained calculated results based on the proposed equation were verified by the results of the study of deposits at the bottom of the advance chamber of the operating pumping station, which showed that the spread of the obtained data does not exceed 7…12 %. At the same time, the smallest particles settle at the end of the prechamber in the water suction zone. The obtained data showed the possibility of using the proposed equation to determine the trajectory of sediment particles deposition at the bottom of water intake structures of pumping stations.