The non-rectilinear spillway dug symmetrically and the rectilinear spillway (experimental study)

It is clear that the role of spillway is ensured the safety of dams. It is characterized by its different geometric configurations such as rectilinear spillway and non-rectilinear spillway. The present work was interested in the experimental comparison between the non-rectilinear spillways dug symmetrically (by different depths of hollowing of the alveoli) and the rectilinear spillways in thin wall of the same width, in order to compare the evacuation performance between them. This study showed that the performance of non-rectilinear spillways symmetrically excavated, is greater than the discharge capacity of rectilinear spillways in thin wall in all phases of hydraulic loads.