Method of forming an immersed dam foundation and a dam structure thereon
US4881848A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Jul 26, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D23/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An immersed dam foundation and a dam structure are formed in a body of moving water by forming a plurality of spaced piers having temporary support posts thereon. A current deflector is secured to the upstream support posts and sheet piling walls are driven to form upstream and downstream walls between the piers forming a base therebetween. The base is covered with a tremie seal and the walls cut off so that a prefabricated dam structure can be floated to a location above the tremie seal and lowered onto anchor points on the adjacent piers and secured to the piers and tremie seal. An exposed face of a pier is protected from the currents by barriers that serve as a portion of the next upstream and downstream walls, with gravel covered by precast concrete pads. The access galleries of adjacent prefabricated dam structures are closely aligned and seals provided therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.