一种新型冲洗式沉沙池的设计探讨

Design Discussion on A New-Type Scouring Sedimentation Basin

在对各种类型沉沙池及适用条件进行分析的基础上,通过在沉沙池的首部加调流板、在溢流堰上沿水流方向设溢流槽、对冲沙廊道进行改进并设置辅助冲沙设施这3个方面对传统沉沙池进行了改进。提出了一种新型冲洗式沉沙池,并进行了模型试验。试验结果证明,这种新型冲洗式沉沙池可以大大提高沉沙池对悬移质泥沙的沉淀效率,并有利于泥沙的排除。

Based on analysing all kinds of sediment silting basins and their suitable conditions, the traditional sedimentation basin has been improved in three aspects, i.e., setting an adjusting flow board in the fore of setting basin, adding a spillway trough along the flow direction, and redesigning the flush gallery by adding auxiliary flushing facilities. Thus a new-type continuously scouring basin was proposed. The results of model experiment proved that the new-type setting basin can greatly improve the deposition efficiency of suspended sediment and help the excluding of silt.