EFFECTS OF THE SLUICEWAY WIDTH ON THE EFFICIENCY OF SEDIMENT REMOVAL

摘要

Amongst different parameter affecting the flow character and therefore the capacity of the flow to erode the bed upstream from the sluiceway is the width and the optimum opening of the sluiceway. In this paper the experimental results on the effect of sluiceway width on the efficiency of sediment removal is reported. Three different widths, 3 different flow discharges in combination with three different sluiceway openings are considered which results in 27 experimental data set. It is shown that increasing the sluiceway width generally results in the increase of the sediment removal. However, this trend is more noticeable in the lower range of the suiceway width and further increase in the higher range of the width don't make that much difference in the sediment removal. Therefore, it is possible to find a range of optimum value for the sluiceway width. Also it is shown that for higher range of the flow discharge, the extent of the eroded bed could reach to the area upstream from the intake structure which decreases the efficiency of the sluiceway.