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Hydraulic Model Studies of McPhee Dam Spillway

C. A. Pugh

A 1:36 scale model was used to develop the hydraulic design of the spillway for McPhee Dam located on the Dolores River in southwestern Colorado. The model included the approach channel, spillway crest and radial gates, spillway chute, combination stilling basin-flip bucket, and exit channel. The 18.3-m (60-ft) wide by 303-m (994-ft) long chute spillway is designed for a maximum discharge of 940 m-3/s (33 130 ft-3/s). Ordinarily, energy is dissipated in a hydraulic jump. For large floods, the flow will 'sweep out' of the stilling basin into the exit channel. Model studies included investigation of approach flow conditions, pressures and flow distribution in the chute spillway, flow characteristics with the combination stilling basin-flip bucket, and flow conditions and erosion in the exit channel. Details of the testing and recommended design modifications are described.

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Hydraulic Model Studies of McPhee Dam Spillway

C. A. Pugh

A 1:36 scale model was used to develop the hydraulic design of the spillway for McPhee Dam located on the Dolores River in southwestern Colorado. The model included the approach channel, spillway crest and radial gates, spillway chute, combination stilling basin-flip bucket, and exit channel. The 18.3-m (60-ft) wide by 303-m (994-ft) long chute spillway is designed for a maximum discharge of 940 m-3/s (33 130 ft-3/s). Ordinarily, energy is dissipated in a hydraulic jump. For large floods, the flow will 'sweep out' of the stilling basin into the exit channel. Model studies included investigation of approach flow conditions, pressures and flow distribution in the chute spillway, flow characteristics with the combination stilling basin-flip bucket, and flow conditions and erosion in the exit channel. Details of the testing and recommended design modifications are described.

Hydraulic Model Studies of McPhee Dam Spillway

C. A. Pugh

A 1:36 scale model was used to develop the hydraulic design of the spillway for McPhee Dam located on the Dolores River in southwestern Colorado. The model included the approach channel, spillway crest and radial gates, spillway chute, combination stilling basin-flip bucket, and exit channel. The 18.3-m (60-ft) wide by 303-m (994-ft) long chute spillway is designed for a maximum discharge of 940 m-3/s (33 130 ft-3/s). Ordinarily, energy is dissipated in a hydraulic jump. For large floods, the flow will 'sweep out' of the stilling basin into the exit channel. Model studies included investigation of approach flow conditions, pressures and flow distribution in the chute spillway, flow characteristics with the combination stilling basin-flip bucket, and flow conditions and erosion in the exit channel. Details of the testing and recommended design modifications are described.

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Titel:

Hydraulic Model Studies of McPhee Dam Spillway

Beteiligte:

C. A. Pugh (Autor:in)

Erscheinungsdatum:

1981

Format / Umfang:

64 pages

Medientyp:

Report

Format:

Keine Angabe

Sprache:

Englisch

Schlagwörter:

Civil Engineering , Hydraulic models , Dams , Spillways , Model studies , Design , Stilling basins , Erosion control , Model tests , Flood control , High pressure gates , Dissipation , Energy , Colorado , Delores River , Channels(Waterways) , Modifications , Water flow , McPhee Dam(Colorado)

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