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|Title:||Riprap stability and navigation tests for the divide-cut section Tennessee-Tombigbee Waterway : hydraulic model investigation|
|Authors:||United States. Army. Corps of Engineers. Nashville District.|
Maynord, Stephen T.
Oswalt, Noel R.
|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-86-3.|
Abstract: This investigation evaluated the stability of the in-place riprap on the Tennessee-Tombigbee Waterway and provided limited guidance for design of riprap on other navigable waterways. The in-place riprap was shown to be stable for all tows traveling at speeds up to 80 to 90 percent of their theoretical limit speed. Only unloaded tows or service boats , which are capable of traveling near their limit speed, are capable of producing waves high enough to fail the riprap. Water-level drawdown and maximum wave height were measured for a wide range of tow speed and water depth. Greater water depths do not necessarily result in lower wave height or water-level drawdown. Tows simply go faster in the greater water depths, which prevents reduction of wave height or water-level drawdown. Two techniques relating riprap size to wave height were verified in this investigation. Several techniques relating ship speed to maximum wave height were evaluated with the measured data.
|Appears in Collections:||Technical Report|