Selection of the appropriate mixtures of earthen embankments plays an important role in reducing the chances of failure of such crucial structures by either overtopping, internal erosion, or seepage, etc. Recent studies show that 34% of failures cases are due to overtopping which pose a major flood risk to the people and properties in the inundation areas. In this study, the failure of compacted homogeneous non-cohesive earthen embankment due to overtopping has been experimentally investigated. Effects of different shape parameters including the embankment downstream slope, the crest width and the height of the embankment on the erosion process are tested. Evolution of the breach shape is tracked using a high-definition camera. Time of failure of the embankments is evaluated for different downstream slopes, crest width and embankment heights. The results show that the downstream slopes have a major effect in changing the failure modes of the embankment. For small downstream slope of 5:1 (V: H), and 10:1, the erosion of the downstream slope takes place along a pivot point located above the bed of the embankment where the base length of the embankment increases by time. However, for higher values, the pivot point is located on the base of the embankment and the base length of the embankment decreases by time till it reaches equilibrium. Also, using different mixtures of gravel/sand materials affect the time of failure.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Effect of Shape Parameters on Failure of Earthen Embankment due to Overtopping


    Weitere Titelangaben:

    KSCE J Civ Eng


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    01.05.2020


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Noncohesive Embankment Failure due to Overtopping Flow

    Coleman, S. / Andrews, D. P. / Webby, M. G. et al. | British Library Conference Proceedings | 1999


    2D Numerical Simulations of Embankment Dam Failure Due To Overtopping

    Dorfmann, Clemens / Moser, Konrad / Zenz, Gerald | HENRY – Bundesanstalt für Wasserbau (BAW) | 2014

    Freier Zugriff

    Modelling the overtopping of embankment dams

    Fiori, A. | Online Contents | 1996


    New Riprap Design Criteria to Prevent Embankment Dam Failure During Overtopping

    Frizell, K. H. / Ruff, J. F. / Association of State Dam Safety Officials | British Library Conference Proceedings | 1997


    Strength gain phenomenon in earthen embankment construction

    Sutaria, T.C. | Engineering Index Backfile | 1967