The problems of long term stability for slopes of clays (rocks containing clay interlayers) with reological properties were considered. Justification of safe operation of the slope at the site with responsible structures of Odesskij Priportovij Zavod (Ukraine) was considered as an example. Forecasting of the slope state and recommendations on providing its safe operation were formulated.
Dans ce rapport on traite les problemes de la garantie de la stabilite durable des versants se composant des sols argileux (versants granitiques comprenant des intermediaires argileuses) et possedant des proprietes geologiques. On se base sur les resultats obtenus durant la construction de l'Usine de port à Odessa (Ukraine) au cours de laquelle on a elabore les conditions d'une exploitation de sûrete des versants sur le chantier de cette usine, y compris d'autres biitiments importants situes dans l'avoisinage. On formule les conclusions concernant Ie pronostic de l'etat du versant et les recommandations pour l'assurance de son exploitation de sûrete.
: Probleme der Gewöhrleistung der langfristigen Festigkeit der Abhangen aus lehmiger Boden (Felsabhangen mit lehmiger Banken), die Fliesseigenschaften besitzen, am Vorbild der Begruendung der Anhangssicherheitbetriebsbedingungen in der industriellen Zone des Odesskij Priportovij Zavods mit in dieser Zone befmdeten wichtigen Gebauden sind behandelt, Die Abfuerungen ueber den Prognose Anhangsbefund und die Empfehlungen an der Gewöhrleistung seines Sicherheitbetrieb sind formuliert.
The ensuring of long-term stability of argillaceous soil slope as well as of rock slope with argillaceous bands (with flow characteristics) depends on reliable forecast of speed and values of soil pack creeping. The study of slope long-term stability process is of a special importance at ensuring safety and environmental protection in the presence of critical buildings on landslideable areas. Ensuring slope safe operation at the warehouse area of Odesskiy Priportiviy Zavod (Ukraine) is considered in the report as an example. Large-capacity storage of liquid anunonia and superphosphoric acid (SPA), overpasses, chemical production buildings etc., and deep-sea terminals adjoining the lower part of the slope make this problem of special importance.
The analyzed part of the slope is situated on the seaside of Grigorievskiy firth of the Black sea close to Odessa city. It consists (Fig. 1) of heterogeneous, rather strong soils (Meotian clays with sand and limestone inclusions stmtified by loess loam of quaternary sediments with a thickness of up to 17 m and by Ponticlirnestones with a thickness of up to 7 - 9 m). Static shear strength (conditionally-instantaneous) of Meotian clays which determine stability of the soil mass is tg φ0.1 = 0.31 + 0.34 (φ = 17° + 19°) and C0.1 = (0.04 + 0.05) MPa. Critical parameters of shear strength of these sorts of soils are tg φ∞1 = 0.18 + 0.23 and c∞.1 = (0.024 + 0.030) MPa.
During the plant construction (about 25 years ago) the slope was flattened. After man-caused reclamation the slope total angle was 10°-11°. Moreover, during the construction of deep-sea terminals the dredging was performed at the bottom of the slop
