Abstract
This research aimed to investigate safeguarding the hydraulic structures. In the barrage model, the performance of continuous sills with different cases of open gates was investigated experimentally in the laboratory. The experimental works are implemented in laboratory of technical institute of Kut. There are several closed gates and how symmetry and asymmetry with different discharges and sills arrangements are carried out. The results were recorded and analysed. The discussion has illustrated the impact of sills in confining the hydraulic jumps in the stilling basin’s paved region and reducing the near-bed velocity that cooperates in reduction the scouring case near the stilling basin.
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