落差指数法在三江口水文站应用初探

Application of drop index method at Sanjiangkou Hydrological Station

贵港市沿江支流大多数水文站高水部分均受郁江、黔江和浔江洪水顶托影响,导致高水部分水位流量点子散乱,定线比较困难。本文以三里站为落差计算参证站,采用落差指数法对三江口站水位流量关系进行单值化分析,探索该站受大江大河回水影响后水位流量关系定线难的问题,为受回水影响站点的水位流量关系定线方法提供借鉴。

Most hydrological stations of Guigang City located on tributaries are influenced at high water level by floods of Yujiang River, Qianjiang River and Xunjiang River, which leads to the water level and flow points are scattered and line decision is difficult. With Sanli Station as the reference station of drop calculation, single-valued analysis of the stage-discharge relation of Sanjiangkou Hydrological Station was conducted by drop index method;the line decision problem of stage-discharge relation influenced by backwater from big rivers was also explored.