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因地形、地质条件的限制,某些工程需将消力池作为电站尾水排放通道,从而导致消力池在运行过程中出现侧向进流的现象。针对这种布置形式,结合某实际工程在1∶40的模型上对其水力特性进行了试验研究,观测了水流流速、尾水渠水位、水流流态等水力学指标,经对比分析,提出了一种较为合理、经济的侧向进流方式,即跌坎底流消力池+尾水涵管体型。试验结果表明,该体型不仅有效地利用了地形,还妥善解决了消能防冲与电站尾水衔接问题。
Due to the limitation of the terrain and geological conditions, some projects need to use the stilling pool as the discharge passage of the tailrace of the power station, resulting in the lateral inflow of the stilling pool during operation. Aiming at this arrangement form, combining with a practical project, the hydraulic characteristics of the model were tested on a 1:40 model. The hydraulic indexes such as water flow velocity, tail water level and water flow pattern were observed. After comparing and analyzing, A more reasonable and economical way to the side of the inflow, that is, the bottom of the stream flow tank + tail water Culvert body shape. The test results show that the body shape not only makes effective use of the terrain, but also properly solves the problem of energy dissipation and anti-collision with the tailrace water connection.