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洪水预报的精度主要取决于较长系列的水文资料和流域内人类活动影响情况,但是实践证明流域内水文地质条件出现较大的差异,暴雨特性也是随时随地而变,预报方法及其参数对预报精度都有较大影响。要提高洪水预报的精度,首先要了解各种影响预报洪水精度的原因,并通过资料分析种种误差的定量方法,以此达到减少误差提高洪水预报精度的目的。
The accuracy of flood forecast mainly depends on the long series of hydrological data and human activities within the catchment. However, it has been proved that the hydrogeological conditions in the catchment are greatly different. The characteristics of heavy rain are also changing from time to time. The forecasting method and its parameters predict Accuracy has a greater impact. To improve the accuracy of flood forecasting, we must first understand the various reasons that affect the accuracy of flood forecasting, and through the analysis of data to quantify various errors, so as to reduce the error and improve the accuracy of flood forecasting.