保水堰过流能力的试验研究

保水堰是一种新型的衔接水工建筑物,是分段低压输水系统的关键部分,它的过流能力影响到整个系统的过水能力。通过物理模型试验,研究了具有代表性的两个保水堰在自由出流情况下的流量系数的变化规律,用最小二乘法对试验数据进行了拟合,得到了流量系数与堰上水头的关系式,为实际工程提供参考。

Study on the Conveyance Capacity of the Water-keeping Weir

The water - keeping weir is one of the new hydraulic structures which is using as a connecting project, it is the key part of the water conveyance system of segmentation and Low - Pressure, the conveyance capacity of the weir effects the whole system. This text studied the change law of the flow coefficient of two typical water - keeping weirs working in the free flow situation by the physical models, using the least square method to fit the date of the experiments, got the relations of the flow coefficient and the weir head, provided a reference to the practical project.