Mechanisms of Formation of Displacement Zones in Soil Mass During Construction of Urban Inclined Transport Tunnels

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DOI : http://dx.doi.org/10.13005/bbra/1992

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ABSTRACT:

The presented paper discusses the results of mathematical simulation of construction of a city’s transport facility using the example of the inclined escalator tunnel of the Vasileostrovskaya subway station of the Saint Petersburg subway. The study focuses on the mechanisms of formation of zone of displacements caused by tunneling in soil mass, in particular, subsidence of earth surface (so-called subsidence trough), which can cause undesirable influence on a city’s buildings and structures. The paper presents qualitative and quantitative evaluation of the simulation results.

KEYWORDS:

Soil mass; city transport tunnels; sliding zone; deformation criteria of evaluation