Investigation into the effect of forecutters on plough performance

K. D. Lauder, M. J. Brown, M. F. Bransby, J. Pyrah

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    Pipeline ploughing is a common method used to bury offshore pipelines for protection. During ploughing, rate effects which occur in fine grained granular soils increase the tow force required by the support vessel and may reduce achievable plough velocities, thereby increasing the duration of a contract. The share of the plough ‘cuts’ the trench with some ploughs featuring a second, smaller cutting tool known as a forecutter which sits in front of the share. The effectiveness of the forecutter in reducing tow forces during ploughing has been investigated by reduced-scale model testing and is outlined herein. The forecutter is shown to be beneficial
    in reducing the rate effect but has a negative impact on the ‘static’ component of tow force. Conditions where the forecutter should be of overall benefit to reducing the tow force during ploughing are described.
    Original languageEnglish
    Title of host publicationFrontiers in Offshore Geotechnics II
    EditorsSusan Gourvenec, David White
    PublisherCRC Press
    Pages865-870
    Number of pages6
    ISBN (Print)9780415584807
    Publication statusPublished - 2011

    Keywords

    • Pipeline ploughs
    • Ploughing
    • Forecutter
    • Offshore
    • Rate effects

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