Force and Pressure Measurements in Spillway Plunge Pools

by Peter J. Rae, (M.ASCE), Acres Int Ltd, Niagara Falls, Canada,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


Plunge pools are often used to dissipate energy from high head spillways with flip bucket terminal structures. Conventional design of plunge pools has been based on a program of mobile bed hydraulic model studies which are used to determine the depth of equilibrium scour. These studies can be combined with analytical studies which attempt to describe the behavior of the plunging jet and the associated entrainment of ambient fluid in the plunge pool. In cases where a slope or bed protection must be provided by concrete lining or revetment, the conventional methodology does not indicate the potential uplift loadings on elements of the surface. This paper describes a program of turbulent pressure measurements in a spillway plunge pool.

Subject Headings: Scour | Spillways | Pressure measurement | Hydraulic models | Energy measurement | Hydraulic loads | Uplifting behavior

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