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MILAN METRO: LINE 3 (YELLOW LINE) EXTENSION

… subway extension in a difficult geotechnical condition in urban area …

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The project is an extension of the metro line 3 (4 lots in different time); It is an extension of the existing line; every lot is about 1000 meters long including one station and services structure (ventilation shaft, emergency exit, etc.), all underground.

The tunnels are excavated with traditional method with soil treatments to improve the mechanical characteristics and to control water inflow (consolidation grounting with cement suspension and/or chemical solution or jet grouting), or with cut-and-cover method with the use of diaphragm walls.

Michela Chiorboli was Head of “Civil Design Unit” of Metropolitana Milanese, responsible of design of civil works coordinated with the “Equipment design Unit” (feasibility study, preliminary, final and construction design and support in construction management).

OWNER

Milan Municipality

LOCATION

NORTHERN ITALY - Milan

YEAR

2002 - 2006

CLIENT

Michela Chiorboli worked as Head of Civil Design Unit at Metropolitana Milanese S.p.a.

(Milan Municipality was Metropolitana Milanese’s Client)

PROJECT VALUE

72.5 Mio EUR.

TYPE OF WORK

Metro, Tunnel, special geotechnical works, foundation piles, pile wall, landslide stabilization, monitoring, Subway station

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