Date of post: 11 July, 2018
Mumbai: 5,100 meters of tunnelling has been completed for Colaba-Bandra-SEEPZ metro-3 corridor, the Mumbai Metro Rail Corporation (MMRC) on Tuesday announced. MMRC is using Tunnel Boring Machines (TBMs) at various Launching Shafts for tunnel construction of Mumbai Metro Line-3, according to a release.
- “We are pleased to announce the completion of 5 kms of tunnelling within one year of the project’s initiation. With the strong and ceaseless support from all our stakeholders, we are positive to complete the project as December 2021,” Ms. Ashwini Bhide, Managing Director, MMRC said.
- So far, all 17 TBMs have completed the Factory Acceptance Test (FAT) and 15 of them have already arrived in the city, according to the release.
- While 8 TBMs have been lowered and have started their main drives, the lowering process of 3 TBMs are in progress.
- Towards this July-end, 2 more TBMs will be lowered and the remaining TBMs will be lowered by end of September 2018.
All 17 TBMs are expected to be working in full swing by October 2018.
Azad Maidan Launch Shaft:
- The two TBMs of package-2, Vaitarna 1 & 2, have so far completed 1,050 meters of tunnelling.
- They will construct total 4.5 km of tunnel up to Grant Road.
Naya Nagar Launch Shaft:
- The two TBMs of package-4, Krishna 1 & 2, have tunnelled 2164 meters so far.
- They will construct total 2.5 km tunnel up to Dadar metro station.
Vidyanagari Launch Shaft:
- The two TBMs of package-5, Godavari 1 & 2 have completed 1073 meters of boring so far.
- They will dig total 2.98 km of tunnel up to CSIA Domestic Airport.
Marol Naka Launch Shaft:
- The two TBMs of package-7, Wainganga 1 & 3 have tunnelled 806 meters so far.
- They will construct total 1.2 km of tunnel up to CSIA International Airport.
For construction of the underground corridor, the TBMs need to altogether bore 52-km for both the up & down line. Currently the TBMs are moving at the speed of 350 meters per week which is expected to increase up to 700-800 meters per week by October 2018. The first TBM breakthrough for the project is expected in September 2018 in package 7.
Credit: Mumbai Metro 3