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- Title
EQUILIBRIUM SCOUR DEPTH AT WATER INTAKE STRUCTURES.
- Authors
Neilands, Roberts; Gjunsburgs, Boriss
- Abstract
Water intake structures in common with other river hydraulic structures, as abutments, piers, guide banks, spurs, and others, are exposed to flow in floods, leading to local scour at foundations and possible failures of these structures. Calculation of the equilibrium scour depth at the hydraulic structures ensures the reliability of the structures in floods and prevents from substantial adverse economical and environmental consequences. Local scour at water intakes in rivers has not been studied yet. Because of the similarity of the shape, location, and consequently of similarity in influence on flow conditions by river intakes and other hydraulic structures, it is accepted that methods designed for scour estimation at structures with vertical walls can be used for equilibrium scour depth estimation at water intakes and other hydraulic structures, e.g., at bridge abutments. New equilibrium scour depth calculation method for water intakes was presented and verified by experimental data. The influence of main hydraulic and riverbed parameters on local scour were established and it was found that other parameters like - local flow velocity, flow contraction, and stratified bed conditions, which were not accounted in most of the earlier published scour calculation methods, have also influence on scour depth and were considered in proposed method.
- Subjects
HYDRAULIC structures; EQUILIBRIUM; STRUCTURAL engineering; MASONRY; FLOODS; RELIABILITY (Personality trait); FLOOD control
- Publication
Telecommunications & Electronics, 2008, Vol 24, Issue 9, p84
- ISSN
1407-8880
- Publication type
Article