Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/13285
Title: Hurricane protection structure for London Avenue Outfall Canal, Lake Pontchartrain, New Orleans, Louisiana : hydraulic model investigation
Authors: United States. Army. Corps of Engineers. New Orleans District
Leech, James R.
Keywords: Alignment
Canals
Drainage
Gates
Head loss
Pumps
Surge
Torque
Waves
London Avenue Outfall Canal
Flood protection
Flood control
Lake Pontchartrain
New Orleans
Louisiana
Publisher: Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; HL-87-16.
Description: Technical Report
Abstract: The 1:20-scale physical model investigation was conducted to give a three-dimensional analysis of the hydraulic performance of the unique vertical butterfly-gated structure, measure the torque on each gate shaft due to incoming and outgoing flows, and evaluate the effects of wave action on the gates. The model. was also used to align the canal to provide a more uniform flow distribhtion through the structure and measure the-water-surface differentials across the structure. Model tests indicated that the original design did not perform as intended; therefore, a solution was obtained by modifying the geometry of the canal and gates by trial and error. The recommended crescent gate design performed satisfactorily for anticipated incoming and outgoing flows. Storm waves were measured along the reach of the canal from the lake to the structure to determine the maximum wave heights propagating in the canal. The model also indicated that the torque on each gate shaft decreased with waves superimposed during pumping operations and increased with waves superimposed during storm surges. The results of the torque measurements are presented in Appendix A to give design information for sizing the dampening device which operates as a shock absorber, the vertical shafts, operating machinery, and structural components.
Rights: Approved for public release; distribution is unlimited.
URI: http://hdl.handle.net/11681/13285
Appears in Collections:Technical Report

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