南水北调中线工程倒虹吸管道水力学试验研究

Experimental study on flow characteristicsin inverted siphon for Diversion Project from South to North China

通过对南水北调中线工程总干渠西赵河倒虹吸的水工模型试验研究,对此类大型渠道倒虹吸的水力特性有了充分的认识,并给出了两类大型倒虹吸管各段的阻力损失分布及沿程阻力系数和局部阻力系数。通过水头损失计算值与实测值的比较,两者十分接近。为此类大型倒虹吸特别是南水北调中线工程中倒虹吸的设计和运行管理提供了依据。

By hydraulic test on flow characteristics in the Xichao River inverted siphon on the main canal and Yanzi River inverted siphon for river of S?N Water Transfer Project ,the flow characteristics in invested siphons have been understood enough, and the distributions of head loss in different sections, the local and friction cofficients for two kinds of siphons were given. The calculated values are in good agreement with the measured data.