一种采用输移浓度为主要参数的泥石流流量计算新方法

A new calculation method for debris flow based on transport density of gully bed.

根据沟床水力条件对泥石流浓度的调节作用和泥石流浆体浓度对沟槽输移能力所具有的重要影响 ,建立了由流域产沙条件来估计浆体浓度 ,再由沟槽输移浓度来确定泥石流流量的新方法 .经对比检验 ,计算流量与形态调查流量相近 ,平均相对误差为 - 6 9% ,最大相对误差为 - 14%

The regulation effect of hydraulic conditions of gully bed on the debris flow density and the important influence of slurry density of debris flow on the gully transport capacity are taken into account while establishing the new method. The liquid body density is estimated through the sediment production conditions of the valley, then the debris flow quantity is determined based on the transport density of gully bed. The comparative test shows that the calculated discharge is close to the discharge from pattern investigation. The average relative error is -6 9%, the maximum is -14%.