摘要
跌坎型底流消能工是一种新型的消能工,其入池水流在主流上下形成漩涡和强剪切紊动进行消能,提高底流消能率。通过某大型水电站水力学模型试验,对几种不同的底流消能工进行了对比研究,表明跌坎的存在可以有效地降低消力池临底流速等水力学参数,改善消力池内水流的流态,极大提高了入池水流的水力学指标,保证其运行安全,满足高水头、大流量泄洪消能工的要求,为底流消能应用于高坝建设提供了参考和借鉴。
The falling-still bottom-flow dissipation is a new kind of energy dissipater which can improve energy dissipation efficiency through vortex turbulence and strong shear. In this paper, compares with different energy dissipater methods through a model test of a large hydraulic station, found that the falling-still can reduce the hydraulic characters and im- prove the stilling pool flow pattern. It can ensure the safe operation of stilling basin and adapt the high water level and large discharge. Also, this paper provides a reference for the construction of bottom energy dissipater used in high dams.
出处
《水科学与工程技术》
2012年第6期66-68,共3页
Water Sciences and Engineering Technology
关键词
消力池
跌坎
底流消能
模型试验
高坝
stilling basin
falling-still
bottom-flow dissipation
model test
high dam
