小集水区试验中三角堰量水问题的研究  

Study on the Discharge Characteristics of Triangular-Notch Thin-Plate Weirs

作　　者：吴长文[1] 王礼先[1] 

机构地区：[1]北京林业大学水土保持学院

出　　处：《北京林业大学学报》1993年第3期66-74,共9页Journal of Beijing Forestry University

摘　　要：对5种不同缺口角度的不完全收缩薄壁三角堰的出流特性进行了室内实验,得出了实验条条件下的流量系数经验公式和θ=90°堰的低水头(h<6cm)流量系数公式.通过理论分析和实测资料验证,指出了不能直接采用堰流公式得出小集水区的暴雨径流流量,并分析了野外观测的精度.The discharge characteristics of thin-plate triangular weirs in five levels were studied experimentally and the empirical formula for the discharge coefficient was established for the given conditions of the experiment.Based on field measurements,a description of how to derive the process curve of stormflow in small catchment or natural run-off fields was put forth and the accuracy of discharge measurements was analyzed.

关 键 词：三角堰 流量系数 小集水区 

分 类 号：S715.1[农业科学—林学]