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Title: Filling and emptying systems, Millers Ferry and Jones Bluff Locks, Alabama River, Alabama : hydraulic model investigation
Authors: Ables, Jackson H.
Boyd, M. B. (Marden B.)
Keywords: Locks (Hydraulic engineering)
Hydraulic models
Alabama River (Ala.)
Millers Ferry Lock and Dam (Ala.)
Jones Bluff Lock and Dam (Ala.)
Publisher: U.S. Army Engineer Waterways Experiment Station
Series/Report no.: Technical Report (U.S. Army Engineer Waterways Experiment Station) ; no. 2-718
Abstract: Filling and emptying systems for the 600- by 84-ft Millers Ferry (48-ft lift) and Jones Bluff (45-ft lift) Locks will comprise two intake ports in the river side of the upper gate block, 10-ft-square culverts in each wall, a lateral crossover culvert at the midpoint of the lock leading to four longitudinal floor culverts with side ports, and culvert outlets which empty riverward of the lock in the common outlet basin. Reverse-mounted tainter valves control flow in the system. The hydraulic system was tested in a 1:25-scale model. Original design intakes and outlets performed satisfactorily. The major portion of the study was devoted to developmental tests of a new type of filling system, the longitudinal floor culvert system. Two systems were developed, one to conform to site restrictions at the Millers Ferry project and a second for use at the Jones Bluff project where no space limitations are placed on the system. Pressures were satisfactory except just downstream from the filling valves; pressures recorded in these areas may result in cavitation. Admission of small controlled quantities of air just downstream of the valves should cushion the collapse of vapor pockets and minimize possible damage without adversely affecting performance of the system. With the adopted hydraulic system installed in the model, hawser stresses on 6- and 12-barge tows were well within the 5-ton limit during operations with normal heads and 14-ft submergence. The longitudinal floor culvert systems investigated exhibited several favorable characteristics which suggest that these systems may be used effectively in larger and higher-lift locks. However, much additional developmental work is needed prior to the use of such a system at projects with larger locks or significantly higher lifts.
Description: Technical Report
Gov't Doc #: Technical Report No. 2-718
Rights: Approved for Public Release; Distribution is Unlimited
Appears in Collections:Technical Report

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