有无分水墙对莲花寺水库消力池消能效果的影响

Influence of Splitter Wall on Lianhuasi Reservoir Stilling Basin Energy Dissipation

为研究分水墙对莲花寺水库消力池消能效果的影响,利用水工模型试验,研究有无分水墙时消力池内的水力特性和消能率。结果表明,分水墙阻碍了水流的横向扩散,不仅导致水流的临底流速偏大,且使消力池对水流的能量削减不足,在海漫段仍保持较大流速。取消分水墙能加剧水流在横向上的碰撞摩擦,显著提高了消能率,减小了消力池的临底流速,有利于消力池的正常运行。研究成果为消力池中分水墙的设置提供了参考。

In order to study the impact of the splitter wall on Lianhuasi reservoir stilling basin,hydraulic model test were carried out to study the hydraulic characteristic and efficiency of energy dissipation.The results show that the splitter wall impeded the lateral diffusion of water flow.It not only enlarged the pre-bottom velocity,but also leaded to inadequate energy dissipation such as apron＇s high velocity.Canceling the splitter wall could reinforce the lateral rub and improve the efficiency of energy dissipation significantly,reduce the pre-bottom velocity,which is favor of the operation of stilling basin.The research can provide reference for the arrangement of splitter wall in stilling basin.