Spillway for discharging extraordinary floods at dams having at

Details Spillway for discharging extraordinary floods at dams having at Spillway for discharging extraordinary floods at dams having at

1991-12-12

1993-03-23

Corbin, David H.

Hydraulic and earth engineering

Fluid control, treatment, or containment

Flow control

405 90, 405 94, 405111, 405114, E02B 722, E02B 806

Patent

active

051958465

ABSTRACT:
For the purpose of providing a more economical alternative to conventional control gates for the quasi-permanent closure of all or part of the length of the overflow spillway of a dam except when discharging extraordinary floods, the invention consists of installing on the sill of the spillway a water level raising means comprising at least one heavy element, held by gravity on the sill, the water level raising means or its element being designed to overturn at a predetermined head corresponding to a headwater level not higher than the predetermined maximum water level in order to discharge extraordinary floods, smaller floods being discharged by a separate flood discharge structure.

REFERENCES:
patent: 565019 (1896-08-01), Newburg
patent: 972059 (1910-10-01), Clarke
patent: 2118535 (1938-05-01), Betts
patent: 2961731 (1960-11-01), Buzzell et al.
patent: 3342033 (1967-09-01), Crouch et al.
patent: 4650368 (1987-03-01), Bayer
patent: 4661014 (1987-04-01), Aubert
patent: 5032038 (1991-07-01), Lemperiere

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