ABSTRACT
Running tunnels will be constructed using TBM, stations – cut and cover method. In the paper problems related with the execution of 29 m deep excavation in Quarternary soils (silty sands, sands, clayey sands and Pliocene clays) are discussed. Within the excavation Nowy Swiat Station (S11) of the 2nd metro line will be built.The S11 station will be founded at the depth of 29 m below ground surface (b.g.s.) in the vicinity of so called “Warsaw Slope”, where the denivelation (difference in ground surface levels) reaches 30 m (Figure 1).
