According to the principle of deflection of flow on bucket,a proposal that the proper change directional bucket is arranged at the end of overflow arch dam,by which the longitudinal diffuse jet-flow can be achieved is suggested.

According to the special topography of spillway downstream of Dalong primary reservoir and the problem to the energy dissipation of downstream, the authors put forward the energy dissipation method with "tipsy height and low on defection bucket" to solve the practical engineering problem after comparing with a lot of methods.

According to the principle of deflection of flow on bucket,a proposal that the proper change directional bucket is arranged at the end of overflow arch dam,by which the longitudinal diffuse jet-flow can be achieved is suggested.

Research on shape optimization for flip bucket of spillway tunnel for Xiluodu Hydropower Station;

A bevel flip bucket combined with curved outer sidewall can make the nappe turnover transversely with more significant diffusion which is called " turnover flip bucket" herein.

This paper analyzes the influence of bucket angel to the characteristic of surface current energy dissipation, which is base on the experiment result of surface current energy dissipation of release sluice in Mohu water power station.