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Influence of Backwater on Headcut Advance

by Kerry M. Robinson, (A.M.ASCE),
Gregory J. Hanson, (M.ASCE),



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

A study was performed to examine the influence of backwater level downstream of an overfall on headcut advance. The discharge, overfall height, and soil type were held constant while varying tallwater level. The intermediate tailwater levels with a backwater to overfall height ratio of approximately 0.8 produced the largest headcut advance rates. The tailwater level downstream of the overfall was observed to vary the advance rate by a factor of 2.6 to 7.5 over the range of soil conditions tested.

Subject Headings: Backwater | Tailwater | Spillways | Soil properties | Soil classification | Soil analysis | Erosion

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