ABSTRACT
The GIS represents an effective and useful digital tool for managing various types of information in order to be able to use it as required. In this context, a geological portal has been created within TELT since the beginning of 2000s on a GIS basis in order to classify, sort and record all geotechnical/geological parameters. The IT portal is set up with a database in an SQL Server and a GIS mapping representation. It has been populated over time with data from the different project phases which have characterised the Lyon-Turin project. The database includes data from exploratory investigations, measurements of the water resources in the areas involved in the new railway line and data from the construction of the first underground works (face surveys, excavation progress, geotechnical monitoring, TBM excavation parameters). Within this huge information structure, data is organised with a WBS or Work Breakdown Structure. The breakdown of the base tunnel into smaller, identifiable elements allows the huge mass of data to be better tracked and organised and to make information accessible to all operators on a common dictionary basis. In addition, the possibility of using a single structure allows to avoid duplication and the exponential growth of available data. In conclusion, the organisation of GIS data according to a single WBS becomes particularly important in big projects in order to create lean tools capable of responding in an increasingly efficient and effective manner.
