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https://hdl.handle.net/11681/47017
Title: | Spillway for Cannelton Locks and Dam, Ohio River, Kentucky and Indiana : hydraulic model investigation |
Authors: | Pickering, Glenn A. Grace, John L. |
Keywords: | Spillways Hydraulic gates Stilling basins Hydraulic models Cannelton Locks and Dam (Ind.) Ohio River |
Publisher: | U.S. Army Engineer Waterways Experiment Station |
Series/Report no.: | Technical Report (U.S. Army Engineer Waterways Experiment Station) ; no. 2-710 |
Abstract: | The Cannelton Darn spillway will comprise twelve 100-ft-wide bays with flow regulated by tainter gates. Model tests were conducted on a 1:36-scale section model which reproduced one central gate bay and approximately half of each adjacent gate bay. Tests were conducted on spillways utilizing both submergible and nonsubmergible tainter gates. Tests were concerned with weir crest shape, discharge characteristics, gate radius and trunnion position, stilling basin performance, and riprap requirements downstream from the stilling basin. Tests revealed that flow separated from the downstream face of the original gate sill which utilized submergible gates, and a parabolic shape was added to the weir crest in order to prevent separation and guide flow into the stilling basin. Rating curves were determined for the submergible-gate spillway with both weir crest shapes. Tests to determine effect of gate radius and trunnion location on stilling basin action with the submergible-gate spillway revealed that a 64-ft radius gate with its trunnion at elevation 388.0 was more effective in preventing undesirable basin actions than was a 50-ft-radius gate with its trunnion at elevation 383.0. Although adequate performance was obtained with the submergible-gate spillway utilizing the parabolic weir crest, tests revealed that satisfactory flow conditions, adequate energy dissipation, and effective passage of debris could be obtained with a nonsubmergible-gate spillway which is considered to be the most practicable design. Several stilling basin designs were tested, but the original basin design was recommended for adoption because of structural advantages. Riprap requirements for streambed protection downstream of the stilling basin were investigated. |
Description: | Technical Report |
Gov't Doc #: | Technical Report No. 2-710 |
Rights: | Approved for Public Release; Distribution is Unlimited |
URI: | https://hdl.handle.net/11681/47017 |
Appears in Collections: | Technical Report |
Files in This Item:
File | Description | Size | Format | |
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WES Technical-Report No. 2-710.pdf | 105.8 MB | Adobe PDF | View/Open |