论文部分内容阅读
龙开口水电站水库调节库容较小,具有日调节性能,采用坝顶开敞式溢流,下游采取挑流消能方式.坝址处河床狭窄,洪水期泄洪流量大且泄流频率高,是很典型的高坝、大单宽流量泄流枢纽.对于此类工程,消能防冲是需要解决的主要问题.以水工断面模型试验为手段,以堰面流态、水舌形态及冲坑尺寸作为判别标准,通过多个试验方案的分析比较,阐明宽尾墩挑流联合消能方式运用于此工程的优越性,并对宽尾墩的两种体型进行比较,对宽尾墩的具体尺寸进行了适当的优化,提出了消能防冲最优的宽尾墩型式和具体尺寸参数,为设计提供了有力的依据.
Long Kaikou hydropower station reservoir adjustment capacity is small, with daily regulation performance, using the crest of open crest, the downstream to take the flow of energy dissipation.The dam site at the riverbed is narrow, the flood discharge flow is large and the discharge frequency is high, it is very Typical high-dam, large single-width flow discharge hub.For such projects, energy-dissipating anti-scouring is the main problem to be solved.With hydraulic section model test as a means to the weir flow pattern, water tongue shape and the pit Size as a criterion to analyze the advantages and disadvantages of the combined use of flaring tail piers in the project through the analysis and comparison of a number of experimental schemes. The two types of flaring piers are compared, The optimal size of the tail pier and the specific size parameters are proposed, which provide a strong basis for the design.