%0 Journal Article
%A CAO Hao
%A WANG Cheng-gang
%A LI Ji-tao
%T Application of Large Sample Data Analysis Method to Flow  Calculation of Medium and Small Rivers
%D 2019
%R 10.11988/ckyyb.20190303
%J Journal of Yangtze River Scientific Research Institute
%P 40-44
%V 36
%N 11
%X Traditional flow measurement methods (e.g. flow meter method, buoy flow measurement method, index flow rate method, specific drop area method, etc.) for most small and medium-sized rivers at present are featured with large investment and large time consumption. In association with traditional sectional flow calculation theory and the latest surface velocity measurement technology, we propose a method of determining the stage-discharge relation of river section via inputting large sample data   of surface velocity and sectional water level. This method needs only a small amount of observed flow data at medium and high water levels to calculate flow rate and fit the stage-discharge curve. Compared with traditional methods, the proposed method reduces the workload of flow rate measurement required for fitting the stage-discharge curve, and cuts down the errors brought about by measurement, hence enhancing precision. It is also convenient for operation with low cost.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20190303