ABSTRACT
Today, more than ever before, the use but, above all, the capacity to manage high volumes of data measured and collected during the implementation of large infrastructure projects, has become decisive. Data analysis is becoming bigger and bigger: to the more traditional production and tunnelling progress data, we must now add environmental monitoring data, such as the concentration of airborne asbestos fibres, and the data characterising spoil materials, geo-mechanical monitoring data, aboveground civil structure monitoring data. The paper investigates the issues, with reference to the High Speed and High Capacity Terzo Valico dei Giovi Line, connecting Genoa and Milan, 53 km long, of which 37 km running underground, in two tunnels excavated according to both the conventional and mechanised models. There is a special focus on the management of the soil and rocks excavated by means of TBM-EPB (closed shield), produced during the construction of the Polcevera lateral access tunnel, preliminary to the excavation of the railway tunnels. The results of the analyses provide useful information for both design purposes and for guiding the choice of the most suitable solutions to be adopted.
