通水减蚀分流墩的研究与应用  

Study and Application of Water-Supply and Erosion-Reduction Splitter Pier

作　　者：朱展博[1] 李玉洁[1] 卞全[1] ZHU Zhanbo;LI Yujie;BIAN Quan(PowerChina Northwest Engineering Corporation Limited, Xi'an 710065,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065

出　　处：《西北水电》2020年第6期133-136,共4页Northwest Hydropower

摘　　要：里底水电站可研设计阶段底孔消力池存在首部能量集中、佛氏数较低、消力池流态复杂等问题。为解决消力池首部水流集中带来的流态不稳定、表面水冠较大、脱离水流跃出消力池、池内波浪较大等问题,在消力池首部设置3个分流墩。虽然分流墩有效调整了消力池流态,但分流墩表面存在负压,为减小或消除负压,提出了在分流墩上布置通水减蚀设施,通过减压模型试验验证表明:通水减蚀设施可有效减小分流墩表面负压。During the feasibility study design stage of the Lidi Hydropower Station,the stilling pool of the bottom outlet encounters problems such as energy concentration,low Frost number,and complicated flow patterns.In order to solve the problems of unstable flow pattern caused by the concentration of water flow in the head of the stilling pool,large surface water cap,water jumping out of the stilling pool,and large waves in the pool,three splitter piers are set at the head of the stilling pool.Although the splitter pier has effectively adjusted the flow pattern of the stilling pool,there is negative pressure on the surface of the splitter pier.In order to reduce or eliminate the negative pressure,water-supply and erosion-reduction facilities are recommended on the splitter pier.It is verified by pressure relief model test that the water-supply and erosion-reduction facilities can effectively reduce the negative pressure on the surface of the splitter pier.

关 键 词：分流墩 通水减蚀 负压 

分 类 号：TV653[水利工程—水利水电工程]