Documentazione
Hydrogeological impact of Firenzuola railway tunnel: inferences from the chemical and isotope composition of surficial and ground waters
Anno di pubblicazione: 2014
A cura di: Luca Ranfagni e Stefano Rossi - ARPAT , Fabrizio Gherardi - CNR Istituto di geoscienze e georisorse
Indice non disponibile
The Firenzuola tunnel is part of the new Bologna-Firenze high-speed railway, opened in 2009. This tunnel, located approximately 29,2 to 44,5 km northwards of Firenze, was excavated at an elevation of 300-350 m a.s.l, below the main apenninic watershed (mean elevation 1000-1100 m a.s.l.; Rodolfi et alii, 2004).
The excavation of the Firenzuola tunnel caused a significant drop of groundwater levels, and the drying out of springs and creeks regionally, due to the seepage of surrounding groundwater into the tunnel (AA.VV. 2008). About 250 L/s of groundwater currently discharge into this tunnel during the low-flow season, but a maximum inflow of 900 L/s was estimated, along the whole tunnel, during the digging.
