校正因数法及其在水位流量关系定线中的应用

Correction Factor Method and Its Application in Stage-Discharge Relation Alignment

摘要: 由于洪水涨落影响造成同水位下，涨水面河道附加比降i > 0，即由于洪水上涨引起的水面比降大于稳定流下水面比降(河槽坡度)，而退水面时反之，造成同水位下，洪水涨落时的流量Q_涨 > Q_c > Q_退，表现在水位流量关系图上为逆时针绳套曲线。根据《水文资料整编规范》规定，受洪水涨落影响的测站，可采用校正因数法定线推流。本文以樟树水文站为例，就校正因数法的应用方法进行详细阐述，为受洪水涨落影响的测站进行流量资料定线整编提供参考。

Abstract: Caused by the flood fluctuation effect with the water level, the higher the water level the additional slope i > 0, that is caused by the rising flood water surface slope is greater than the situation in steady flow , and on the contrary, i < 0. At the same water level, flood fluctuation will show that flow rate Q_r > Q_c > Q_f, and stage-discharge relation will display a counterclockwise rope curve. According to “the hydrological Data Consolidation Code”, for hydrologic stations affected by flood fluctuation, the discharge could be derived by single curve fitting with correction factor method. Taking Zhangshu hydrology station as an example, this paper expounds the application method of correction factor method in detail, and provides reference for flow data alignment and rearrangement of stations affected by flood fluctuation.