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EXCAVATION BEGUN FOR THE SECOND TUNNEL, 3,000 MM IN DIAMETER, BY MICROTUNNELLING TECHNOLOGY: THE FIRST TUNNEL IS ALREADY COMPLETED.

Metro C is building the stretch of line tunnel between the San Giovanni station and the Via Sannio multifunctional shaft 3.3, a stretch about 140 m in length for each track, to be done by traditional method using microtunnelling technology.

IMG_7728The excavation of the first of the two tunnels, begun in late January, is already completed, while the excavation of the second tunnel, 3,000 mm in diameter, by microtunnelling technology, has started in recent days. Subsequently, the ground surrounding the tunnel outline will be stabilised by chemical and cement grouting, which is needed to improve the ground’s mechanical characteristics and waterproofing prior to proceeding with the excavation enlarging the two line tunnels. IMG_7727

Metro C S.c.p.A.’s member companies