DTIC ADA637655: Tainter Gate Tests, Norfork Dam pdf

DTIC ADA637655: Tainter Gate Tests, Norfork Dam

More Book Details

Description of the Book:

Results of full-scale tests of a tainter-type control gate under high-head conditions conducted at Norfork Dam, Arkansas, indicated that the hydraulic performance of either the fixed trunnion- or eccentric trunnion-type gate was satisfactory. Pressures on the gate and in the immediate vicinity thereof were positive. Fluctuations of pressure were small and were maximum at full gate opening. Vibration and downpull measurements were difficult to obtain, as seal friction appeared sufficient to influence both to a considerable degree. Visual observation of both type gates revealed no objectionable vibration characteristics. Analysis of data, model and prototype, also indicated that hydraulic downpull forces were small. Difficulty was experienced with the initial type of seals investigated with the fixed trunnion-type gate; these seals were actuated by water pressure from the reservoir. This difficulty was alleviated by use of a pneumatically operated gate seal. The use of the eccentric trunnion-type gate provided positive sealing action and no trouble was encountered

• Creator/s: Defense Technical Information Center
• Date: 6/1/1954
• Year: 1954
• Book Topics/Themes: DTIC Archive, , ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS, *DAMS, ARKANSAS, FRICTION, HYDRAULIC MODELS, INSTRUMENTATION, MODEL TESTS, PROTOTYPES, SEALS(STOPPERS), VIBRATION

An excerpt captured from the PDF book