Spillway for discharging extraordinary floods at dams having at least two flood discharge structures
US5195846A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Dec 12, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02B7/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.