Tweet Share

• Send by email

  Send by email

  

  Soil conditioning process of Pliocene formation for Rome Metro C EPB -TBM

  The overall project of the Rome Metro C line includes the realization of more than 50 km of tunnels and 30 underground stations. The T3 stretch, in particular, involves the realization of underground operations under the Rome city centre, one of the richest areas of historical and archaeological buildings included in the UNESCO World Heritage. In the central part of section T3 the excavation involved the Pliocene clay formation, particularly subject to the risk of clogging and for the first time affected in Rome by the mechanized excavation. Being the interaction between the mechanized excavation and the surface particularly sensitive, specific measures have been taken to manage the conditioning process during the excavation. Specific laboratory tests were therefore carried out at Sapienza University of Rome to verify the potential clogging risk associated with this formation and the effectiveness in minimizing this risk through a careful selection of conditioning chemicals and parameters. This paper presents the results of the research activity developed to describe the peculiarities of the behaviour of the Pliocene clay and the beneficial effects of soil conditioning process. Moreover, interesting insights will be shown by comparing the results obtained in the laboratory and the evidences recorded on site during the excavation.

  Recipient :

  Name ^* :

  E-mail address ^* :

  ^* Required fields

  Send   or  Cancel

• Print