水文流量测验水深测量误差实例分析

文章根据采用低水测深杆法测流时观读水深读数方式的不同,对流量测验精度产生的影响进行了分析。经实例数据分析论证表明,不正确的观读方法会对流量资料精度产生明显影响。无论是在测深杆迎水面和背水面观读数据均是错误的测验方式,都会给流量测验带来较大误差,长系列资料因观测方式的错误会引起水位~流量关系曲线明显偏离,降低了流量资料成果精度。文中针对读数误差来源,提出了具体改进建议。

In this paper, the influence on the accuracy of flow measurement is analyzed according to the different reading methods of viewing water depth when using low water bathymetric rod method. The analysis and demonstration of the example data shows that the incorrect reading method will have a significant impact on the accuracy of the flow data. Whether it is the wrong test method to read the data on the water surface and the back water surface of the bathymetric rod, it will bring great error to the discharge test. Due to the error of the observation mode, the long series of data will cause the water level-discharge relationship curve to deviate obviously. The accuracy of flow data is reduced. Finally, some suggestions for improvement are put forward according to the source of reading error.