Quantitative Descriptions of Drainage Processes on Irregular Surface of Road Segments Based on Advanced Computer Simulation Techniques (II) : Simulation Model for Description of Drainage Process on Irregular Road Surface

概要

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This paper presents a simple system of quantitative descriptions of drainage processes on irregular surfaces of road segments based on computer simulation techniques, and it proposes an alternative flow model which more closely takes into account linked geomorphic and hydrologic properties. In earlier papers, the author formulated such a model in the one-dimensional manner. The approach employed here is extension of this model into two dimensions. The model derived here represents the mode of accumulation of water in depressions on the irregular surface and the development of oversurface flow. The surface flow system is simulated by a simple storage model. The assumptions behind a model postulated as describing the model of accumulation of water on irregular surfaces are that the infiltration capacity of soil is exceeded and the rainfall continues. Accordingly, the residual water ration (the depression-storage of irregular surfaces) can be derived in a simple way. In order to verify the applicability of these models for practical purpose, several types of road surface consolidated by different combinations of operations and machinery were analyzed.
日本雨水資源化システム学会の論文
2012-01-00