EVACUATING FLOOD SPILLER FOR DAMS AND SIMILAR WORKS THAT UNDERSTAND AN INTEGRATED WATER SHEET AERATION DEVICE DOWNWARD

摘要

the present invention relates to a spillway (5) flood evacuator for dams and similar works comprising a spillway limit (6) of which the ridge is situated at a first predetermined level (rn) lower than a second predetermined level (rm) that corresponds to a maximum level or level of the highest waters (phe) for which the dam (1) is projected, the difference of the said first and second levels (rn and rm) corresponding to a predetermined maximum flow of a exceptional flood, and a lock (10) that blocks the spillway (5), said lock (10) comprises at least one rigid and massive lock element (11), which is positioned on the crest (8) and held in place on the latter by gravity, said lock element being unbalanced, when the water reaches a third predetermined level (n) higher than the top of the lock element (11), but at most equal to the second predetermined level (rm) . according to the invention, said spillway further comprises an aeration system comprising at least one duct (20) for directing air towards the bottom of the jet evacuated by the crest of said lock (11).