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Milano blue metro line excavation came to end
After 2 years of boring, finally the M4 Tunnel Boring Machines arrive in Solari next week with celebration. July was planned for this event. Coronavirus measures and water leaks from an aquifier made boring of the tunnel slower.
Two TBM machines came from opposing directions and bored two parallel tunnels of 6.5 meter diameter 25-30 meters under ground.15 Kilometers long, the M4 Blue Line will have 21 stations.
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://milano.repubblica.it/cronaca/2020/09/03/news/nuova_metropolitana_m4_lavori_gallerie-266148859/
Linea Blu del metrò a Milano, l'ultimo sprint delle talpe: terminate le gallerie
milano.repubblica.itDopo il blocco di luglio per le infiltrazioni, la prossima settimana con l'arrivo in via Solari finiranno i lavori