Articles written in Sadhana

    • Influence of drainage blanket clogging on response of homogeneous earthen dams


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      Observations of drainage in earthen dams indicate that the phenomenon of clogging can lead to a radical reduction in the efficiency of drainage, making it non-functional within a few years after construction. This paper discusses the most common forms of clogging in drainage blankets and their influence on seepage and stability of earthen dams. Different clogging typologies are studied for both horizontal and inclined drainage blankets by reduction in drain length, thickness or by simulating random clogging scenarios. Two-dimensionalfinite element analysis is carried out to decipher the influence of clogging on the temporal seepage and stability response of earthen dams. The results of the study indicated that clogging typologies have recognizable effect on the response of the earthen dams. Inward clogging is identified as the most critical clogging scenario in earthen dams.

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