流域产流事件模型及其应用

The Runoff Yield Event Model and Its Application

本文抓住流域产流的主要环节，以流域下渗容量分配曲线与产流过程的关系为依据，吸收斯坦福流域水文模型的合理结构，并与常规的前期影响雨量算法结合起来，建立产流事件模型。该模型在汉江支流丹江和洵河两个流域应用，其产流合格率达８０％以上。经验表明，此模型简便易行，使用效果好，值得研究推广。

By considering the main elements of runoff yield in a basin based on the relationship betweenthe infiltration capacity distribution curves and the runoff yield process.the author of this paper has taken the rea-sonable structures in the Stanford Watershed Model IV. combined with the traditional antecedent precipitation in-dex(Pa)and established the Runoff Yield Event Modd(RYEM The RYEM has been used for flood forecastingin two watersheds of Danjiang and Xunhe, the tributaries of Hanjiang RiVer The tests show that the qualified ra-tios of runoff yield all exceed 80%,It is believed that the RYEM is both simple and convenient.