メッシュ法の概念とパラメーターの同定

Abstract

The GRID ANALYSIS was presented as one of the simulation model for the urbanstorm runoff. On the hydraulic aspects, this model consists of three components; surfaceflow, pipe flow and river flow. Except the last flow, the linearity is assumed to hold goodon the calculation of each hydrograph. This paper would verify this assumption on thelinearity, by applying the actual watersheds in Tokyo, Japan.This paper describes the linearity on the relationship between rainfall and runoff, byapplying the GRID ANALYSIS to the actual watershed. The parameters dealed in thispaper are the surface velocity, pipe flow velocity, the area of manhole subcatchment andthe overall ratio of loss. According to several calculations, the restriction of the linearitywould be shown.