Stone Stability in Non-uniform Flow

Hoan, N.T.; Stive, M.J.F.; Booij, R.; Hofland, B.; Verhagen, H.J.

doi:doi:10.1061/(ASCE)HY.1943-7900.0000387

Stone Stability in Non-uniform Flow

Title

Stone Stability in Non-uniform Flow

Author

Hoan, N.T.
Stive, M.J.F.
Booij, R.
Hofland, B.
Verhagen, H.J.

Faculty

Civil Engineering and Geosciences

Department

Hydraulic Engineering

Date

2011-09-01

Abstract

This paper presents the results of an experimental study on stone stability under nonuniform turbulent flow, in particular expanding flow. Detailed measurements of both flow and turbulence and the bed stability are described. Than various manners of quantifying the hydraulic loads exerted on the stones on a bed are extensively reviewed and extended. On the basis of the data, a new relationship between flow parameters and bed damage—expressed as a stone entrainment formula—has been established for nonuniform flow. As the present data is in line with existing data on other flows, the present relation seems applicable for other types of nonuniform flow as well. Such a relationship could provide more consistent design criteria and allow an estimate of the cumulative damage over time, which is important for making decisions regarding maintenance frequency and lifetime analysis of hydraulic structures.

Subject

stone stability
stone transport
stone entrainment
incipient motion
threshold condition
bed protection
decelerating flow

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http://resolver.tudelft.nl/uuid:8195c98e-9725-4d86-bc4d-c6979a3f2a75

DOI

https://doi.org/10.1061/(ASCE)HY.1943-7900.0000387

Publisher

American Society of Civil Engineers

Embargo date

2011-12-01

ISSN

0733-9429