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Toe Scour Protection in Open Channels

by Stephen T. Maynord, US Army Engineer Waterways, Experiment Station, United States,
N. R. Oswalt, US Army Engineer Waterways, Experiment Station, United States,



Document Type: Proceeding Paper

Part of: Soil Properties Evaluation from Centrifugal Models and Field Performance

Abstract:

Scour at the toe of bank protection works is one of the major causes of failure of these structures. Weighted riprap toes are frequently used to prevent bank protection failure due to toe scour. However, several cases have been reported in which the weighted toe did not provide adequate protection. The parameters that are important in the design of weighted riprap toes are examined in light of the reported failures. Laboratory and field investigations are used to recommend toe configuration and toe volume required for stability.

Subject Headings: River bank stabilization | Scour | Riprap | Field tests | Open channels | Failure analysis | Water flow

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