泵站取水建筑物底部泥沙淤积轨迹研究

Study on Sediment Deposition Track at the Bottom of Water Intake Building of Pumping Station

研究泵站取水建筑物底部泥沙淤积的原因和规律,消除泥沙对泵站取水建筑物运行效率的负面影响,是提高取水系统效率的重要措施之一。分析取水建筑物底部固体颗粒沉积速率和沉积轨迹研究中存在的问题,根据固体颗粒在水流中的浓度、颗粒数和水流的主要特性(密度、几何参数)以及泵站前室的设计尺寸,提出了一个确定固体颗粒沉积轨迹的方程,并通过实验验证所建立方程获得的计算结果,结果表明所获得数据的误差分布在7%~12%。通过获得的数据表明,可以使用所提出的方程来确定泵站取水结构底部沉积物颗粒沉积的轨迹。

It is one of the important measures to improve the efficiency of water intake system to study the cause and law of sediment deposition at the bottom of water intake building of pumping station and eliminate the negative effect of sediment on the operating efficiency of water intake building of pumping station. The problems in the study of the deposition rate and trajectory of solid particles at the bottom of water intake buildings are analyzed. According to the concentration of solid particles in the flow, the number of particles, the main characteristics of the flow, such as density, geometric parameters, and the design size of the pumping station front chamber, an equation for determining the deposition trajectory of solid particles is proposed. The experimental results show that the error distribution of the obtained data is in the range of 7%~12%. The data obtained show that the proposed equation can be used to determine the trajectory of sediment particle deposition at the bottom of the water intake structure of the pumping station.