利用锥面帖角倒悬扭曲面挑坎，控制射流导向，形成三维挑流水舌，水舌沿程扩散、碰撞、掺气良好，并在下游水垫中产生了三元水跃，较大幅度地提高了下泄水流的综合消能率，达到良好的消能防冲效果。将该挑坎应用于爽岛水电站滑雪道改造，经过现场泄洪测试和近５年的工程运行检验，证明了试验效果和应用情况良好。 By using a cone surface corner, the torsional surface is inverted and the ridge is inverted. The jet is controlled to form a three-dimensional pick-up water tongue. The water tongue spreads, collides and aerates well along the route, generating a ternary water jump in the downstream water cushion. It improves the comprehensive energy dissipation rate of discharged water and achieves a good energy dissipation and anti-flush effect. This tug was applied to the reconstruction of the ski slope of Shuangdao Hydropower Station. After the on-site flood discharge test and the engineering operation test in the past 5 years, it was proved that the test effect and application conditions are good.