堆砂防除に関する土砂水理学的研究.第12報 : 水中自動給砂装置を有する流砂実験水路の開設

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In this paper, authors considered experimentally on the efficiency of underwater automatic sand-feeder from the sediment hydraulic standpoint. As an experiment on the application to sediment control system of storage dam by combining some control methods, for instace, the sorting by slit dam and the natural flushing by vortex tube sand trap, a newly established underwater automatic sand-feeder, was constructed across a rectangular channel having a uniform slope (0.02), and uniform sand or mixed sand was poured from the head reach together with water at constant rate of flow by means of a wet-form sand-feeder at various uplift rate, vf, of 0.35∿1.55cm/s. These experiments prove that the underwater automatic sand-feeder is very efficient in a basic sediment hydraulic test.
神戸大学の論文