黄河包头河段泥沙模型设计

A Physical Sediment Model Design at Baotou Reach of the Yellow River

针对黄河泥沙多且变化大的特点 ,采用泥沙运动相似条件的最新研究成果 ,完成了黄河包头河段动床模型沙选择和比尺设计。利用原型实测资料进行的验证试验 ,表明模型小河较好地复演了原型河势、水沙运动规律及河床冲淤变形等。

In order to simulate the change of flow and sediment of the Yellow River model at Baotou reach, it is necessary to calibrate the model scale of the river. The physical model design has been carried out according to the characteristics of the Yellow River by applying the updated model similarity principles. The coal powder from the Lanzhou Coal Plant are selected as the model sediment material, which is easy to move and has its stable behavior for satisfying the needs of model testing in long time series. It is shown that the model can well repeated the prototype river deformation and the sediment regime.