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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 influence of water diversion wall on the dissipative effect of stilling pool in Lianhuasi reservoir, hydraulic model test was used to study the hydraulic characteristics and energy dissipation rate in stilling pool with or without water diversion wall. The results show that the water diversion wall hinders the lateral diffusion of water flow, which not only leads to a large partial flow rate of the water flow, but also reduces the energy consumption of the water flow in the stilling pool and still maintains a large flow rate in the sea level. Eliminating the water diversion wall can aggravate the collision friction in the horizontal direction, remarkably increasing the energy dissipation rate, reducing the bottom flow rate of the stilling pool and facilitating the normal operation of the stilling pool. The research results provide a reference for the setting of diversion wall in the stilling pool.