APRON OF SPILLWAY STRUCTURE Russian patent published in 1997 - IPC

FIELD: hydraulic engineering. SUBSTANCE: conjugation of spillways with downstream hydraulic engineering structures. Apron has bottom plate 2 and breakwater component 3 located at outlet from apron and across it. It is made in the form of bench 5 and its head surface is vertical and forming successive alternating recesses over length of breakwater component, and protrusions 8 located over entire height of breakwater component. Recess has cylindrical surface, and tops of protrusions 8 are in the form of ribs directed toward water flow 10. Breakwater component 3 can take the form of a wall, and as viewed from side of spillway structure 1 in plan it can be of serrated or wavy configuration. EFFECT: high efficiency. 3 cl, 4 dwg