Mumbai Metro 3 corridor achieve Second TBM breakthrough at SEEPZ station

TBM moves from launching shaft at Sariput Nagar to SEEPZ station

Image for representation only.

Mumbai. Metro Rail News:The Mumbai Metro Rail Corporation (MMRC) today achieve the breakthrough of the second TBM of Colaba-Bandra-SEEPZ Metro-3 corridor at SEEPZ station. The first breakthrough was achieved on September 24 at the Chhatrapati Shivaji Maharaj International Airport (CSMIA) Terminal 2 station.

The Tunnel Boring Machine (TBM), named Wainganga 2, tunneled from the launching shaft at Sariput Nagar, near Aarey Colony to SEEPZ station. It was was commissioned on 23rd August 2018 from Sariput Nagar launching shaft completed its tunnel drive of 568 metres in package 7 to see the light at its end at SEEPZ station. One more time it marks the achievement of an important milestone towards the steady completion of the 33.5-km long Metro-3 corridor. It is the result of consistent and continuous effort by a team of nearly 250 engineers, technicians and workers together to make this reach of tunneling successful.

“This is a second big milestone for the MMRC. We are delighted on completing another challenging achievement. The credit equally goes to the engineers and other stakeholders involved in the project.” said, Ashwini Bhide, managing director of the Mumbai Metro Rail Corporation (MMRC)

Wainganga 2, made its way through the rocky strata made of Basalt drilling relentlessly for exactly 125 days to attain the breakthrough. It has charted its course from under Jogeshwari – Vikhroli link road. The 92-meter long Wainganga-2 bored, on an average, 4.5 meters daily, with a peak rate of 10-12m per day, shaping the tunnel with 405 RCC cement rings.

The first two breakthroughs are part of the Package 7 of the project, which runs from Marol Naka to SEEPZ via MIDC. The first breakthrough was also achieved by Wainganga 1, which was launched for Marol Naka. The package will provide crucial linkages to the other Metro corridors, the existing Mumbai Metro One at Marol Naka station and the upcoming Swami Samarth Nagar-Vikhroli Metro 6 at Aarey station.

It will also provide rail connectivity to commercial hubs of SEEPZ and MIDC. The 4.16-km-long package is being executed by the consortium of Larsen & Toubro and the Shanghai Tunnel Engineering Company.

All 17 TBMs have been commissioned at 10 TBM shafts and tunneling for around 15 km of the 52.21 km has been completed. The first TBMs were lowered at Naya Nagar in Mahim, which are expected to achieve breakthrough in the first quarter of 2019 in Dadar.

Metro-3 corridor in its reach between CSMIA T 2 station to the ramp at Aarey colony will provide access to Versova-Andheri-Ghatkopar Metro-1 at Marol Naka and Swami Samarth Nagar-JogeshwariKanjurmarg-Vikhroli Metro-6 corridor at Aarey Station and also to business hubs like MIDC and SEEPZ which today are not connected by suburban rail.

MMRC, as of today, has completed about 15-km of tunnelling. For the purpose, 17 Tunnel Boring Machines have been commissioned at ten TBM shafts.

On the occasion Ashwini Bhide, Managing Director, MMRC said “This is a second big milestone for Mumbai Metro Rail Corporation (MMRC). We are extremely delightful for completing another challenging achievement and the credit equally goes to the engineers and other stakeholders involved in this Project. Without their hard work and continuous efforts reaching this milestone is unimaginable”

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 and the contractors expect about eleven lakh cubic meters of muck to be generated. The generated muck will be disposed of at Talawali-Pise, a government land spared for dumping the muck. As of today the contractors have disposed of 4.2 lakhs cubic meters of muck.


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