ABSTRACT
The article presents 13 m in diameter TBM EPB railway tunnel driven in very complex geotechnical conditions - Quaternary soils (Sandy Clays, Fine Sands, Clays). The tunnels are largely located under city historic buildings and the thickness of the overburden above the tunnel top is about one tunnel diameter – as much as 0.8 ÷ 1.1 D. Extensive monitoring system of ground surface settlements, the expansion of settlement trough and displacements of subsoil over the TBM were implemented. In the paper, the results of settlements monitoring including long time settlements are presented. Additionally finite element prediction of settlement trough is discussed and compared with the data obtained from monitoring.
