改进的流速仪法测流计算方法及其应用

Improved computation for flow measurement with current meter and its application

分析国标法中流速仪法测流计算方法的不足之处,并从河道断面模拟和部分面积计算两个方面予以改进。基于MATLAB软件平台,提供一份实现改进计算方法的程序。将改进方法应用于鄂西山溪河流古夫河,对汇入其下游古洞口水库的水量进行预测。应用实例表明,改进的流速仪法测流计算方法断面模拟更真实,部分面积计算方法更精确,在山溪性河流流量测量中具有一定的适用性。

The deficiencies of the calculation method for the flow measurement with current meter in the national standard are analyzed, and the corresponding improvements are made from two aspects of the river section simulation and the subsection area calculation. Based on the platform of MATLAB, a program is provided to achieve the improvement calculation method. The improvement method is applied to measure the flow of the mountainous Gufu River in the west of Hubei Province, and the water quantity imported to the downstream Gudongkou Reservoir is predicted. The application of the improvement method indicates that the river cross-section simulation is more natural and the subsection area calculation is more accurate, and it is practical in mountainous rivers.