Razenie tunelov v mestách a ich vplyv na povrchovú výstavbu

Abstract eng:
The Urban tunnels are part of the underground structures, which have their specific geotechnical problems. These structures are excavated in relatively shallow depth, just few tunnel diameters below the ground surface. These geological formations are very sensitive environment so we must be careful with ground movements. This paper focus on the New Austrian Tunnelling Method (NATM) with their factors which determine the settlement at surface. We target the factor of the excavation sequencing. One part of this article is attending with analysis of behaviour excavation sequencing in the rock surrounding and relationship with surface movements. The modelling of this analysis was made by program PLAXIS 8,5.

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