声学多普勒水流剖面仪流量比测实验

on Flow Measurement by Acoustic Doppler Current Profiler

声学多普勒水流剖面仪是目前较先进的河道测流设备。按《规范》要求，利用该仪器前，需要对该仪器与流速仪测流的实测流量进行对比实验，计算其换算系数。在分析ADCP测流原理的基础上，利用引黄干渠张二庄水文站实测流量资料，对两种测流方法测量结果进行对比分析。根据最小二乘法原理，建立回归直线，并对其进行检验。对回归直线进行拟合优度检验，拟合优度系数为0．982；对回归直线用F检验法进行截距检验，回归效果显著。在该断面用ADCP测流时，流量换算系数为0．9911。

Acoustic Doppler Current Profiler（ADCP） is an advanced river flow measuring device. ＂Standard＂ requires before using the instrument, the comparison experiment should be carried out on the measured flow of the instrument with the flow meter to calculate the conversion coefficient. In this paper, based on the analysis of ADCP flow measurement principle, by using the measured flow data from Zhang-er-zhuang monitoring station in the main canal of the Yellow River Water Diversion,we have made a comparative analysis on the results of the two flow measuring methods. According to the principle of least squares method,we have started the test of the goodness of fit of the regression line,and have gotten goodness of fit coefficient 0. 982;we have started the intercept test using the F test of the regression line, and have gotten a significant regression effect. In this section, by ADCP flow measurement, flow conversion coefficient is 0. 9911.