second tunnel boring machine for metro-3 to arrive in mumbai this week | mumbai news - times of india

by:Gewinn     2019-09-03
Mumbai: A week after the first tunnel digging machine (TBM)
Underground Colaba-Bandra-Seepz Metro-
The corridor arrives in Mumbai and the second is expected to arrive on Friday.
\"Recently, in Naya Nagar, Mahim, the first boring shaft, the drilling work of Shaft 6 was built.
SK Gupta of Mumbai Metro said: \"The 08 km double tunnels from Siddhivinayak to Ravi will begin on October (MMRC)
Project director.
\"The boring work from CST to Mumbai center will be to build a second TBM shaft in Azad Maidan,\" he added . \".
MMRC has set the deadline for completion of tunnel work as September 2019.
Contractor for seven civil parcels of 33. 5km Colaba-Bandra-
Seepz route of Metro-
3 corridor will purchase 17 TBMs from leading international manufacturers including robins, TERRATEC, Herrenknecht and STEC.
Of the 17 tunnel rigs, 10 are brand new and 7 are refurbished.
The machines will take at least a year to dig each of the seven civilian parcels, the source said.
In Naya Nagar, a 25-
The m axis has been built and the TBM will be able to rotate around 1. 6-
2 rounds per minute.
\"The machine will be able to cover 8-
14 metres long a day.
\"Due to uneven geological conditions, the distance covered each day may vary,\" Gupta said . \".
TBMs will run 24x7 per 1 kg to remove about 62 m³ of muck. 4m of boring.
Gupta added, \"all the tunnels
The related work, whether it is to clean up the muck, start or retrieve the tunnel shield, will be done in the evening as there will be no traffic on the road.
Once the tunnel is cleared, the MMRC will start laying the subway track.
About 30 people will work each shift in the tunnel, Gupta said.
The whole subway-
The project is divided into two phases: the first phase (Aarey-BKC stretch)
Expected completion in September 2020 and Phase II (BKC-Colaba stretch)
Completion is expected by March 2021.
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