排导结构中泥石流的流动形态

A Study on Flowwing Velocity in Aqueduct of Debris Flow

根据能量守恒原理 ,推导出泥石流在排导槽中的能量方程。根据此方程 ,可求出泥石流在排导槽中任意横断面的平均流速。对方程涉及的各参数进行了深入的讨论 ,首次引入泥石流对一般水体的修正系数K。并把该成果应用于平川泥石流的治理。

This paper inqures into the energy equation of debis flow in drainage canal , according to the law of coservation of energy. Mean current velocity of any transverse section of the debris flow of the aqueduct can be ascertained from this equation. And this paper also gives the course of inference of the equation ,the formula of hydraulic raidius and energy loss of the debris flow in the process of flowing. Meanwhile this paper makes concrete analysis of all parameteres—α 1、α 2、α 3、ξ 1、ξ 2、n 1、n 2, especially first leades into a revised coefficient K cotrast debris flow with water. Finally the theory is applied to the design of aqueduct of debris flow in Pinchuan. K value( K =1.3) is obtained by a model experiment,and it is revised to 1.4 by inspection of the scene,then utilizing the equation ,mean current velocity of the debis flow is reached in the exit transverse section of the aqueduct.