黄河浪店泵站取水防沙水工模型试验

The Model Experiment of Sand Prevention of Langdian Pumping Station in Yellow River

在动床模型试验中,根据黄河浪店水源工程引水闸前设计高水位347.70 m及低水位347.34 m,相应斜坡沟流量为821 m3/s及337 m3/s,对可能出现的各种含沙量条件下运行时闸前后的水流流态、流速分布、含沙量及粒径的分布以及闸前后的河床冲淤变化、拦沙设施的拦沙效果等进行了试验观测,并对浪店泵站取水防沙水工模型试验所测资料进行整理分析。结果表明:在一定水位条件下、水流含沙量不高时可以冲刷形成汊道,为不同时期水泵成功取水进行灌溉提供正确的操作方法。

In the process of the model experiment of movable bed, we observed the distribution of current and flow velocity, sand-bearing content and size of sands, the change of scouring and depositing and the effect of preventing sand when the condition of different kinds of sand-bearing content is used before and after sluice gate, according to the designed high water level 347.70 and low water level 347.34 before the diversion gate in Langdian irrigation works of Yellow River and flow 821-337 m^3/s in rang of course slope. The paper has collected the observed data of the model experiment of preventing sand of Langdian pumping station, and analysed the experiment data. The purpose of the experiment is to provide the right operation method for the to irrigation of pumping water up successfully in the different periods.