野三河水电站泄水建筑物设计及试验研究

Design and Experimental Study of the Discharge Structure in Yesanhe Hydropower Station

基于野三河水电站拱坝泄流量大、河床狭窄及其地形地质条件,对其泄水建筑物的布置、泄流能力、消能防冲、坝体结构优化、便于施工等进行了深入研究与多方案的水工模型试验验证,推荐了最优的泄水建筑物设计方案。经工程运行10余年来多次开闸泄洪表明,原型泄流水舌与模型试验结果吻合较好,坝下冲刷较小,进一步验证了泄水建筑物布置及体型设计的合理性。

Considering the specific conditions of Yesanhe Hydropower Station,such as the large discharge flow,narrow river valley and the topographical and geological conditions,several design schemes of the discharge structure are studied and verified with hydraulic model experiments,including the layout,discharge capacity,energy dissipation and scouring prevention,dam structure optimization,and construction schedule improvement.The optimal design scheme is thus recommended.The project has been operated for more than 10 years and the discharge structure has been opened for flood discharge for many times.Practice shows that the prototype discharge water tongue is in good agreement with the model experiment results,and the scouring under the dam is less,which further verifies the rationality of the layout and design of the discharge structure.