杨堤(三)水文站糙率的推求与应用

Estimation and Application of River Roughness at Yangdi Hydrological Station

摘要: 河道糙率是水文测验与分析计算中一个非常重要的参数，通过杨堤(三)水文站及其落差站2007年~2016年共10年的实测水文资料，分析其断面糙率与水位之间的关系，并采用2017年实测流量对反推糙率进行验证，探索利用水位–糙率曲线推求河道流量的方法，以及在高水位洪水测验中作为抢测流量手段的可行性。

Abstract: The river roughness is one of the most important parameters in the hydrological analysis and calculation. According to the measured hydrological data at Yangdi hydrological station from 2007 to 2016, the relation between cross-section roughness and water level was analyzed. Meanwhile, the roughness deduced by the relationship was verified by the measured discharge of 2017. It indicates that the roughness estimated method based on water level and roughness relation curve is reasonable, and is useful in observing high flood discharge.