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Upstream Emergency Dam, Cheatham Lock, Cumberland River, Tennessee: Hydraulic Model Investigation
Tests conducted on a 1:12-scale model of wickets proposed for use as an emergency dam in the upstream lock approach at Cheatham Lock and Dam were concerned initially with the determination of the force required to raise the wickets under emergency conditions. The tests demonstrated, however, that the dynamic force of the water flowing over and around the wickets resulted in a more critical problem. As the wickets were raised, the uplift force acting upon the wickets slammed them into the closed position with considerable force. With the flat skin plate of the wicket of original design, an unduly long strut was necessary to overcome the uplift force of the flowing water. Use of a curved skin plate resulted in a more stable wicket with shorter strut arms. The maximum force required to raise the curved wicket with a 12-ft head differential was about one-and-one-half times the maximum force required to raise the wicket in still water.
Upstream Emergency Dam, Cheatham Lock, Cumberland River, Tennessee: Hydraulic Model Investigation
Tests conducted on a 1:12-scale model of wickets proposed for use as an emergency dam in the upstream lock approach at Cheatham Lock and Dam were concerned initially with the determination of the force required to raise the wickets under emergency conditions. The tests demonstrated, however, that the dynamic force of the water flowing over and around the wickets resulted in a more critical problem. As the wickets were raised, the uplift force acting upon the wickets slammed them into the closed position with considerable force. With the flat skin plate of the wicket of original design, an unduly long strut was necessary to overcome the uplift force of the flowing water. Use of a curved skin plate resulted in a more stable wicket with shorter strut arms. The maximum force required to raise the curved wicket with a 12-ft head differential was about one-and-one-half times the maximum force required to raise the wicket in still water.
Upstream Emergency Dam, Cheatham Lock, Cumberland River, Tennessee: Hydraulic Model Investigation
1953
48 pages
Report
No indication
English
Upstream emergency dam, Cheatham Lock, Cumberland River, Tennessee
Engineering Index Backfile | 1953
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