List of products by author: S. Morandi

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  Ceneri Base Tunnel: design and excavation of large caverns

  Abstract: The Ceneri Base Tunnel (CBT), 15.4 km in length, is the southernmost portion of the flat railway line crossing the Swiss Alps (AlpTransit Gotthard Ltd). This paper describes and discusses some key issues about the design and execution of large caverns in rock. It aims at illustrating the comparison between the prognosis and the crosscheck of support methods and the adaptation of the first...

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  Metro Milano Line MM2 Piola-Lambrate - Ground stabilization with Hybrid

  Abstract: Metro Milan line 2 was built in 1967 without considering waterproofing details. In late 90’s water table rose by many meters in a matter of a few years. Subsequently high rates of water inflow were observed in the tunnels. For instance, in 2015 the rate measured in the Lambrate-Piola Tunnels was up to 700m³/hour. Several attempts carried out with cementitious or resin injections were...

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