Assessing the impact of semi-circular baffle blocks on scour downstream sluice gates

Abstract EN

In the framework of expanding the arable land by constructing mega hydraulic structures that might be subjected to failure due to scour that implies the extension of the aprons, which adds extra costs.

accordingly, this research was originated with the impartial of assessing the impact of semi-circular baffle blocks on scour downstream sluice gates, in terms of length and depth.

40 experiments were carried out in hydraulic laboratory in al-Azhar university, where a flume equipped with measuring devices was set up.

three ratios of baffle blocks diameter to height “Db / Hb” and three ratios of their location from the gate to the length of the apron downstream (D.S) the gate “Lb / Lf” were considered.

runs were conducted without semi-circular baffle blocks, as a reference, for comparison purposes.

measurements were undertaken; represented on graphs and analyzed.

conclusions were deduced and recommendations were suggested.

the research results highlighted that implementing Db / Hb = 0.78, reduced scour length so as depth, at "Lb / Lf = 0.37".