On the 13^th of February 2019 a fifth TBM breakthrough was reached for Mumbai Metro 3 corridor at Chhatrapati Shivaji Maharaj International Airport (CSMIA) - T2 metro station. The TBM Wainganga 3, had started work on the 2nd April 2018 from Pali ground and has now completed its tunnel drive of 1.31 Kms in package 7.

Wainganga 3 made its way through the rocky strata made of Basalt, volcanic Breccia drilling relentlessly for exactly 318 days to attain the breakthrough. It has charted its course from under existing Mumbai Metro Line 1 at Marol Naka and Sahar Elevated Road connecting to CSMIA T-2. The 92-meter long Wainganga-3 bored, on an average, 4.2 meters daily, shaping the tunnel with 937 RCC cement rings.

M/s. Larsen & Toubro and Shanghai Tunnel Engineering Co. Ltd. are consortia partners for the construction of Package-7 which runs from Marol Naka to SEEPZ via MIDC.

The total length of the tunnel is 7.07-km out of which 50% of tunnelling work (i.e. 3.57 km) has been completed to date. For further information please visit https://www.mmrcl.com. 07/19.

Additional links:

https://tunnelbuilder.com/News/Twin-Tunnel-Breakthrough-in-India-.aspx

https://tunnelbuilder.com/Archive/Projects.aspx?&projectcode=in%2f77

https://www.mmrcl.com/sites/default/files/Press%20release_5th%20TBM%20breakthrough%20for%20Mumbai%20Metro%203%20corridor%20at%20Chhatrapati%20Shivaji%20Maharaj%20International%20Airport-%20T2%20metro%20station.pdf