Characterization of the influence of building a road on the stability of the tunnel lining in a Banska Bystrica railway tunnel
Title:
Characterization of the influence of building a road on the stability of the tunnel lining in a Banska Bystrica railway tunnel
Author:
Vavrek Pavol
Appeared in:
Acta Montanistica Slovaka
Paging:
Volume 6 (2001) nr. 1 pages 130-133
Year:
2001
Contents:
This paper deals with solving the problem of tunnel lining stability in a railway tunnel. The road cut was made into the overburden of the tunnel. I investigated the effect of the road cut on the stability of tunnel lining. The FLAC3D mathematical modelling technique was used for this purpose. The solution consist of: - - - - - - - - - - - -modelling the initial situation before building the intervention,Determing the internal characteristics of the tunnel lining in its original state,modelling the situation after making the road cut,Determing the internal characteristics of the tunnel lining after the building intervention,Comparison of the internal characteristics of the tunnel lining before and after the building intervention.In the model, I used these general geotechnical properties of the rock environment and the tunnel lining:Material Youngus modulus [MPa] Poissons RatioClay 8 0,42Weakly wheathered calcite 3 000 0,25Hard wheathered calcite 600 0,30Fill 300 0,25Lining 20 000 0,20The arbitration of the tunnel lining stability was executed on the basis of the Mohr Coulomb limit of the state. Building the road cut does not lead to loss of stability in the tunnel a at Station 1.225 00 or at Station 1.300 00.
Publisher:
Technical University of Kosice, the Faculty of Mining, Ecolo
Journal description