大尺度浑水水力分离清水装置的水沙分离试验研究

为得到大尺度浑水水力分离清水装置出清率与进流浓度、进流流量和底孔直径的关系，本研究采用物理模型试验的方法对其进行了系列试验研究，并结合室内小尺度物模结果进行分析。结果表明：当溢流流量比较小时，不同的进流流量和底孔孔径对应的溢流浊度相差不大，当溢流流量较大时，溢流浊度随之增加，且溢流流量与进流流量基本呈正比。随着底孔孔径和进流浓度的增加，出清率逐渐减小，在相同进流浓度时装置尺寸越大，出清率越高，并总结出了在固定溢流浊度下，进流浓度、装置直径和清水溢出流量三者的关系式。

Experimental Study on Water-Sediment Separation of Large Scale Turbid Water Hydraulic Power Separation Device

The influences of inlet concentration, inlet discharge, bottom outlet aperture on percentage of clear water in large scale turbid water hydraulic power separation device was investigated based on the experimental study. The results show that the overflow turbidity influenced by different inlet discharge and bottom outlet aperture is not obviously different when overflow discharge is small. The overflow turbidity will increase with increasing overflow discharge, the overflow discharge almost varies directly with inlet discharge. The percentage of clearwater decreased as the bottom outlet aperture and inlet concentration increased, the percentage of clearwater increased as the size of device increased under the same inlet concentration, and the formula between inlet concentration, diameter and overflow discharge under the same overflow turbidity was advanced.