J. T. Myers Lock Outlet Study, Ohio River. Hydraulic Model Investigation
ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICSLAB
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Navigation improvements are planned at J. T. Myers Locks and Dam on the Ohio River main stem. The existing project consists of a navigation dam a 1,200-ft-long by 110-ft-wide main lock chamber adjacent to a 600-ft-long by 110-ft-wide auxiliary lock chamber. One of the improvements includes developing a 1,200-ft long lock chamber from the existing 600-ft-long lock chamber. The outlet design proposed for the filling and emptying system in the extended lock section was a manifold type diffuser located within the landside guide wall monolith and discharging toward the right looking downstream bank. A landside diffuser would help minimize closure of the main lock during construction of the lock extension. A 125-scale model was used to evaluate the outlet design. Modifications to the original design were made to improve the hydraulic conditions at the outlet. The vanes in the original design outlet were angled down-stream to direct the jets away from the right bank. This design was the type 2 outlet diffuser. A stilling basin with two rows of baffle blocks and an end sill was developed to help dissipate the energy of the outlet discharge and reduce the potential for scour. The banks were also reshaped to direct the outlet flow downstream. The size riprap required to protect the area surrounding the outlet was determined. Hawser forces were also measured on tows moored at various locations in the lower approach with solid and floating guide walls.
- Civil Engineering
- Fluid Mechanics