منابع مشابه
Embankment dam spillways and energy dissipators
For the last fifty years, the design floods of a number of embankment dams were re-evaluated and the revised spillway outflows are often larger than the original design discharges. Several embankment overtopping protection systems were developed for earthfill structures, and the applications range from river dykes to tsunami protections including embankment dams. Well-known designs include timb...
متن کاملEnergy Dissipation and Residual Energy on Embankment Dam Stepped Spillways
Stepped spillways are designed to increase the rate of energy dissipation on the chute and to reduce the size of the downstream energy dissipator. It is essential to predict accurately the turbulent dissipation above the steps for large discharges per unit width corresponding to the skimming flow regime. New measurements were conducted in a large facility with a channel slope of 21.8o and a ste...
متن کاملSimple Design Criterion for Residual Energy on Embankment Dam Stepped Spillways
The stepped spillway design is associated with significant flow resistance and associated energy dissipation on the steps, yielding smaller, more economical downstream dissipation structures. A number of design guidelines were developed for steep stepped spillways typical of concrete gravity dams. The focus of this study is on embankment stepped spillways. A large set of air-water flow data is ...
متن کاملNumerical Investigation of Cavitation on Spillways. A Case Study: Aydoghmush dam
Cavitation is among the most complicated and common damages of spillway structures. This phenomenon is controlled by different parameters including the pressure, flow velocity, spillway surface material, operation time, and air flow content. The cavitation index is calculated along the spillway and compared with its critical value using the measured values of the flow’s hydraulic parameters. Th...
متن کاملHydraulic Design of Spillways
Approved for public release; distribution is unlimited. 1. Purpose. This manual provides guidance for the hydraulic design of spillways for flood control or multipurpose dams. This manual applies to all Headquarter US Army Corps of) elements and all field operating activities (FDA) having responsibility for the design of Civil Work projects. 3. General. Procedures recommended herein are conside...
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ژورنال
عنوان ژورنال: Minutes of the Proceedings of the Institution of Civil Engineers
سال: 1922
ISSN: 1753-7843
DOI: 10.1680/imotp.1922.14459