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Abstract: The paper deals with the design of twin tunnels, currently under construction, connecting the existing Municipio Station access shaft (interchange node between Metro Line 6 and Metro Line 1 extension project in Naples, Italy) to the TBM extraction shaft located nearly 40 m far from it. The two short tunnels have to underpass archaeological findings consisting in fortification walls built in the...
Abstract: The new stretch of the Metro Line 1 in Naples (Italy) consists of five new stations and two twin rail tunnels with a total length of about 5 km. Toledo Station is situated in the deeply urbanized historical centre of the city. The main shaft is located by a side of the line and it is connected to the pedestrian platforms by a large size service tunnel, 13 m wide, 17 m high and 40 m long. Figure...