高淹没度下平底宽顶堰流量计算问题探讨  

Problems in discharge calculation of broad-crested weirs with flat bottom under high submerged flows

作　　者：袁新明[1] 邓继军[1] 祁国军[1] 

机构地区：[1]扬州大学水利科学与工程学院,江苏扬州225009

出　　处：《水利水电科技进展》2010年第4期22-24,66,共4页Advances in Science and Technology of Water Resources

摘　　要：对高淹没度平底宽顶堰流量计算存在的问题进行研究,说明现有的2个基本计算公式之间存在较大的计算误差,通过分析大量的实测资料和试验资料,提出高淹没度下的淹没系数计算公式,并将计算值与实测资料进行比较,得出该公式计算的流量平均计算精度比现有的2个基本计算公式计算精度提高了8%-13%的结论。The problems in discharge calculation of broad-crested weirs with flat bottom under high submerged flows were studied.The differences between the existing two basic formulae for the discharge calculation were discussed.A new formula for calculating the submergence coefficient under high submerged flows was proposed based on analyzing the model test data and the measured data.The calculated resulted were compared with the measured ones.A conclusion is drawn that the precision of the proposed formula for the discharge calculation of broad-crested weir with flat bottom under high submerged flows is 8%-13% higher than that of the exiting two basic formulae.

关 键 词：平底宽顶堰 高淹没度 淹没系数 流量计算 

分 类 号：TV132.2[水利工程—水力学及河流动力学]