Abstract
Most of the materials that constitute the uppermost formation (Benin Formation) of the lower Niger Delta in South-Eastern Nigeria are sands, shales and clays that occur at various depths within the formation. These subsurface materials have served as bearing media for both shallow and deep foundation structures.
The potentials for liquefaction of these often loose and saturated sandy units that occur within the uppermost formation have been assessed for a case where a 1020 KVA Power Generating Set was to be sited.
This Paper attempts to present the results of both field and laboratory tests that have been used to assess the liquefaction potentials of the sandy units at Bori, located within the South-Eastern lower Niger Delta of Nigeria.
Résumé
La plupart des matériaux qui constituent la formation la plus supérieure (Formation du Benin) du delta du Niger au Sud-Est du Nigéria, sont des sables, des argilites et des argiles qu’on trouve à des profondeurs variables dans cette formation. Ces matériaux ont constituté les sols de fondation aussi bien pour des fondations superficielles que profondes.
Les risques de liquéfaction des niveaux sableux, souvent lâches et saturés ont été étudiés lorsqu’il s’est agi d’implanter une centrale électrique.
L’article présente les essais in situ et en laboratoire qui ont été réalisées pour cette évaluation.
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Teme, S.C. Liquefaction potentials of a sandy substratum in the south-eastern lower Niger Delta of Nigeria. Bulletin of the International Association of Engineering Geology 42, 85–94 (1990). https://doi.org/10.1007/BF02592623
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DOI: https://doi.org/10.1007/BF02592623