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1 Studia Geotechnica et Mechanica

1 2008

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On safety of slurry-wall trenches

Brząkała W., Górska K.

Studia Geotechnica et Mechanica

2008

Vol. 30, nr 1-2

198-206

The paper focuses on a numerical simulation of ground movements and a stability evalua- tion during the trench excavation process (slurry-walls technology). A special attention is paid to the modelling of failure and to the defining of safety measures. Numerical calculations are based on the FLAC 3D code. It is found that the soil kinematics at failure coincides with the literature data. Three kinds of safety factor are investigated - all results converge if trench is deep enough. In addition, the applied probabilistic safety analysis takes into account the random level of the ground water, as a most important factor, and the soil strength. The acceptable level of safety is found.