福建省中小流域洪水的峰量关系──《福建省中小流域雨洪计算模型》(三)

本文就文献［１］推荐的二阶标准化洪峰流量分布曲线法作了分析。通过洪峰流量与洪水总量间的几种回归关系分析，用确定系数（ｒ２）鉴别，阐明了对数二阶标准化关系为最佳的表达形式．并以福建省境内流域面积２．２６～１０７８平方公里的４１个流域进行了分析研究，提出了对数二阶线性方程的斜率（Ｒ２）等值线图及线性方程的截距（Ａ２）值的分区经验公式。

The Relationship Between Peak Discharge and Runoff Volume of Medium and Small Basins of Fujian Province

The method of second-order standardized peak discharge which is a new method to determine the design peak discharge had been recommended. A theoretical basis for this method have been derived.The log of the second-order standardized rela- tionship in its best expressed form (log(Qp/V2 ) =logA2 + R2logV)is clarified by analyzing the several regressed relationship betweem the peak discharge and the runoff volume, and by discriminating with the coefficient of determination. This paper is aimed at 41 medium and small basins in Fujian, the area of which is about 2.26 to 1078 km2. The figure of the isogram of the exponential (R2 ) of this distribution curve, the empiric formula which deals with the coefficient (A2) of this distribution curve are given in this paper.