Abstract

The paper presents ideas and sketches for high dykes and dams on deep soft clay deposits where building of embankment dykes would involve serious difficulties and sizable expenditures. As an alternative to a stage construction embankment dyke equipped with vertical drains, the paper proposes two buttress-type concrete dams. These concepts aim at avoiding the loading of the soft clay deposit with high embankments and thus reduce stability and settlement problems. The new concepts prove to have both advantages and drawbacks comparatively to the more traditional embankment-type dykes. The advantages include the absence of soil improvement measures, shorter construction time and reduced settlements. The drawbacks relate to the lack of experience for buttress-type dams on soft clay foundations.

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