基于水文下垫面分类的流域来沙量计算方法

Research on Engineering Sediment Volume Calculation Method Based on Hydrological Underlying Surface Classification

针对无资料地区流域来沙量的计算,建立了基于水文下垫面产沙地类的地区雨沙模型,该模型既反映了不同时段雨强对产沙的作用,又反映了流域下垫面的作用,较好地解决了模型参数的地区移用问题。

For the calculation of sediment volume for engineering design in un-gauged basin, a model of rain-sand was developed according to un- dedylng surface type of sediment-yield which was based on hydraulic underlying surface classifying. Considered the effect on raining intensity for producing sediment, on the erosion for underlying surface from raining, it could solve the problem of parameter transforming for different zones.