Pressure Relief Under Hydraulic Jump Stilling Basins

by C. D. Smith, Univ of Saskatchewan, Saskatoon, Canada,
Zirong Gui, Univ of Saskatchewan, Saskatoon, Canada,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


Gravity drainage cannot be used for any portion of a structure located below tailwater level. Yet, drainage of this area may be required to relieve sub-floor pressures and reduce the risk of an uplift failure. This situation particularly applies to hydraulic jump stilling basins for spillways and drops structures because in the absence of drainage the uplift pressure under the slab may exceed the downward pressure due to weight of the slab and water on top of the slab. In this paper, details of a new method of pressure relief are given.

Subject Headings: Stilling basins | Hydraulic pressure | Uplifting behavior | Hydraulic jump | Failure analysis | Drainage basins | Drainage

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