低坎分流墩消能工用于金鸡滩水利枢纽工程的试验研究

The Experiment Research on Dissipator of Diversion Pier with Low Ridge in Jinjitan Hydraulic Complex

针对金鸡滩水利枢纽工程的低Fr水流问题,提出了将低坎分流墩消能工用于此工程的试验研究。在二元水流试验中,从下游水流的流速分布、表面波浪、河床的动床冲刷等水力要素方面选择了适合金鸡滩枢纽工程的低坎分流墩体形尺寸,然后在整体模型上加以验证。研究结果表明,低坎分流墩应用于金鸡滩水利枢纽工程具有显著的消能效果,消能机理清楚,经济效益明显,值得推广应用。

In order to adapt the project to the low Fr current in Jinjitan project, the experiment research is made by employing the diversion pier with low ridge in the experiment with two dimensional flow. Body style and dimension of the pier are worked out according to the distribution of flow velocity, the surface wave and the erosion to the riverbed. The model test of the integral hydraulic structure verifies the significant energy dissipation effect and economic benefit of the diversion pier with low ridge, indicating its value for popular use.