Potential causes for slope instabilities of under-consolidated marine sediments

Conference · Sun Dec 31 00:00:00 EST 1995

OSTI ID:256969

Quemeneur, P; Tisot, J P ^[1]; Cochonat, P; Bourillet, J F; d`Oultremont, V ^[2]; Colliat, J L; Tofani, R ^[3]

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1. ENSG, Vandoeuvre-les-Nancy (France). Laboratoire de Geomecanique
2. IFREMER, Plouzane (France)
3. Elf Aquitaine Production, Pau (France)

Offshore studies have been completed in the Gulf of Guinea, off West Africa. An area has been selected over the Gabon continental slope. A morpho-sedimentological zonation is made regarding acoustic data and geotechnical characteristics of sampled sediments. An old slide has been considered as a criteria for estimating realistic slope failure conditions. Both drained and undrained formulations tend to prove that fluid escape is the most realistic explanation for slides occurrence. Regional hazard charts also allow them to present unstable zones and build up criteria for structures implantation.

• OSTI ID: 256969
• Report Number(s): CONF-950604-; ISBN 1-880653-17-6; TRN: IM9631%%175
• Resource Relation: Conference: 5. international conference on offshore and polar engineering, The Hague (Netherlands), 11-15 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the fifth (1995) international offshore and polar engineering conference. Volume 1; Chung, J.S. [ed.] [Colorado School of Mines, Golden, CO (United States)]; Das, B.M. [ed.] [California State Univ., Sacramento, CA (United States)]; Natvig, B.J. [ed.] [Norwegian Contractors, Stabekk (Norway)]; Olagnon, M. [ed.] [IFREMER, Plouzanne (France)]; PB: 646 p.
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
02 PETROLEUM
03 NATURAL GAS
CONTINENTAL SLOPE
GROUND MOTION
GEOMORPHOLOGY
GABON
OFFSHORE PLATFORMS
SITE CHARACTERIZATION
LANDSLIDES
ATLANTIC OCEAN
SLOPE STABILITY
EXPLORATION
PETROLEUM DEPOSITS