基于ADCP代表流速法“1+1”的多平台流量测验比测研究

Research on multi-platform flow test comparison based on ADCP representative flow method"1+1"

为提高回水项托河段流量测验精度,有力支撑巡测管理,提出了基于ADCP代表流速法“1+1”的多平台流量测验方法,并在汉江中游干流控制站余家湖水文站进行了应用。“1+1”表示水平式ADCP(H-ADCP)和垂直式ADCP(V-ADCP)方法,即通过收集走航式ADCP实测流量成果与同时段H-ADCP、V-ADCP的测验成果,建立实测断面平均流速与H-ADCP代表流速以及V-ADCP代表流速的相关关系。通过比较不同回归方程的计算精度,确定最优回归方程,并对相关关系定线精度进行检验。结果表明:符号检验、适线检验、偏离检验的结果分别为0.45,0.61和0.34,相关关系定线精度符合规范规定要求,说明基于ADCP代表流速法“1+1”的多平台流量测验方法在余家湖水文站的适用性良好,具有一定的推广价值。

In order to improve the accuracy of flow measurement in backwater area,and provide a strong support for patrol management,a multi-platform flow measurement method based on ADCP representative flow rate method"1+1"was proposed.The correlation between the measured average flow rate in section,the horizontal ADCP representative flow rate and the V-ADCP vertical flow rate were established.The optimal regression equation was determined by comparing the accuracy of different regression equation types.At the same time,the alignment accuracy of the correlation relationship established by the regression equation was tested according to the requirements of the specification.The results showed that the alignment accuracy of the three tests was 0.45,0.61 and 0.34,respectively.The alignment accuracy of the correlation relationship was in line with the requirements of the relevant specifications,indicating that the ADCP representative velocity method was suitable for Yujiahu Hydrological Station and had a good value for promotion.