使用 LB70-2D 型流速仪在 U 型渠道断面上布设一条测速垂线(中垂线)实测率定流速修正系数的探讨使用 LB70-2D 型流速仪在 U 型渠道断面上布设一条测速垂线(中垂线)实测率定流速修正系数的探讨 摘要:本文中作者针对灌区测流量水过程中为简化 U 型渠道的计算,在测流过程中布设一条测速垂线(中垂线)实测流量涉及到的流速系数的取值问题,根据《宁夏引黄灌区测流量水法律规范》及相关规程,在惠农渠灌区内选用了一条干渠和两条支(斗)渠对U 型渠道流速修正系数进行了实测率定并与参照值(梯形或矩形的规定经验取值岸边流速系数)相对比,做对比分析,提出了一些建议
关键词:LB70-2D 型流速仪;U 型渠道;计算;流速系数 Abstract: in this paper the author for irrigation test in the process of water flow to simplify the calculation of U channel, in the current process layout a speed vertical (perpendicular bisector) measured flow involves velocity factor values of problems, according to the Yellow River in ningxia irrigation water flow measurement standard "and related regulations, in benefiting the canal irrigation is a main canal and two branch (measures) channel to U channel velocity correction coe