Saturated-unsaturated flow through leaky dams

Ashraf A. Ahmed

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)

    Abstract

    This research investigated seepage flow through leaky dams using the well known finite-element method. Different areas, locations, and hydraulic conductivities of leaks were examined. An area of leak, equal to 4.4% of the core area, increased the seepage flow through the dam to be about 9.5 times the seepage flow through tight (nonleaky) core. This happened for a dam having a downstream horizontal drainage filter. When the drainage filter did not exist, the increase of flow because of the same area of leak was about seven times the flow through a tight core. When the leak existed at the centerline of the core in the out-of-plane direction, its impact was slightly greater than when it existed at the edge of the core. Moreover, as the location of the leak moved up vertically, its impact was observed to be less. It was also observed that when the leak existed in curtain wall driven into underneath the dam, its impact was not significant compared with the case when it existed in the core.

    Original languageEnglish
    Pages (from-to)1564-1568
    Number of pages5
    JournalJournal of Geotechnical and Geoenvironmental Engineering
    Volume134
    Issue number10
    DOIs
    Publication statusPublished - Oct 2008

    ASJC Scopus subject areas

    • Environmental Science(all)
    • Geotechnical Engineering and Engineering Geology

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