摘要
弯曲溢洪道改扩建工程常需经过模型试验研究确定其消能优化方案,针对汤河水库除险加固工程改建方案中弯曲泄槽段急流冲击波及消能不充分等问题,通过水力学模型试验研究,推荐采用多级跌水与底流复合消能方式。在弯曲段一级消力池入口及出口设置斜向高低坎,二级消力池入口加消力坎、尾坎后设置防冲槽,形成多级跌水、两级消力池、消力坎、防冲槽等不同消能元件的组合,不仅有效利用了地形,而且改善了泄流流态,妥善解决了消能防冲问题。
The model experiment is widely used as a key method to determine the reconstruction scheme of curved spill- way. With regard to the project problems as the torrent shock wave in curved chute and flood discharge energy dissipation in the reconstruction scheme of Tanghe Reservoir, a composite energy dissipation system of multi-stage plunge with bottom flow is recommended based on model-test results. The scheme is composed of the first-stage stilling basin with two highlow slope banks at the inlet and outlet in the curved chute and the second-stage stilling basin which has a baffle sill at the inlet and an anti-scour trench behind the baffle wall. The combination of various dissipators, including multi-stage plunge, two-stage stilling basin, baffle sill and anti-scour trench, could not only make full use of the terrain, but also improve the flow condition, thus properly solving the energy dissipation and scour prevention of the spillway.
出处
《水利与建筑工程学报》
2013年第5期1-4,9,共5页
Journal of Water Resources and Architectural Engineering
基金
国家自然科学基金"灾害性天气暴雨洪水过程演化与防洪分类调度方法研究"(51279021)
国家自然科学基金"基于风险分析的跨流域引水环境下水库汛期水位实时调度多目标决策研究"(51079015)
关键词
消力坎
多级消能
弯曲溢洪道
模型试验
汤河水库
baffle sill
multi-stage dissipation
curved spillway
model experiment
Tanghe Reservoir
