Abstract
Drainage improvement projects in agricultural fields such as improvement of drainage channel and pump station have been carried out to prevent the influence of inundation for yield amount. In this research, finite element model in consideration of drainage channel and road was constructed, and the movement of the farmland drainage was analyzed. In this model, farmland which is delimited by drainage channel and road was assumed as a block. Then, flow in drainage channel and each block was modeled by one-dimensional unsteady flow model and two-dimensional shallow flow model, respectively. The introduction of present model makes it possible to forecast the inundation of the agricultural fields without dividing into small finite elements for the reproduction of drainage channel and road.
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