Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Studies to Determine the Feasibility of a Baffled Apron Drop as a Spillway Energy Dissipator. Conconully Dam Spillway Okanogan Project, Washington
The existing spillway structure at Conconully Dam, Washington, was determined to be structurally unsafe and incapable of discharging the design flood. Installation of a conventional hydraulic jump stilling basin or flip bucket to handle the design flood was impractical because of poor foundation conditions. Preliminary investigations showed how, if the allowable unit discharge of a baffled apron drop could be increased from 60 cfs/ft of width to about 80 cfs, such a structure could be built on sound rock. Hydraulic model studies were performed to confirm a design for a baffled apron drop based on a unit discharge of 77.7 cfs/ft of width. The tests indicated that the higher-capacity structure was an effective and safe energy dissipator, and could handle unit discharges up to twice the design discharge. The effect of baffle pier location on the reservoir elevation for maximum discharge was determined. An optimum configuration for the channel bed downstream of the concrete apron was developed to prevent erosion of the apron.
Studies to Determine the Feasibility of a Baffled Apron Drop as a Spillway Energy Dissipator. Conconully Dam Spillway Okanogan Project, Washington
The existing spillway structure at Conconully Dam, Washington, was determined to be structurally unsafe and incapable of discharging the design flood. Installation of a conventional hydraulic jump stilling basin or flip bucket to handle the design flood was impractical because of poor foundation conditions. Preliminary investigations showed how, if the allowable unit discharge of a baffled apron drop could be increased from 60 cfs/ft of width to about 80 cfs, such a structure could be built on sound rock. Hydraulic model studies were performed to confirm a design for a baffled apron drop based on a unit discharge of 77.7 cfs/ft of width. The tests indicated that the higher-capacity structure was an effective and safe energy dissipator, and could handle unit discharges up to twice the design discharge. The effect of baffle pier location on the reservoir elevation for maximum discharge was determined. An optimum configuration for the channel bed downstream of the concrete apron was developed to prevent erosion of the apron.
Studies to Determine the Feasibility of a Baffled Apron Drop as a Spillway Energy Dissipator. Conconully Dam Spillway Okanogan Project, Washington
T. J. Rhone (Autor:in)
1971
12 pages
Report
Keine Angabe
Englisch
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