Gulermak – Tata Projects JV on Saturday celebrated the completion of tunneling work for Pune Metro Phase 1’s 16.589 km Purple Line (PCMC – Swargate).
This historic 8th and final breakthrough by tunnel boring machine S79 (Mula-II) was recorded at Budhwar Peth Station for the 2.74 km Package UGC-02’s 2144m down-line tunnel connecting Swargate and Budhwar Peth.
This was S79’s 4th breakthrough. Prior to this, the Ø6.61m Terratec EPB machine was deployed on Package UGC-01 and arrived at Budhwar Peth from Civil Court in July 2021.
A video of the breakthrough can be viewed on Pune Metro’s Facebook page.
Gulermak – Tata Projects had deployed a total of 3 TBMs to build Pune Metro Phase 1‘s 6.52 km underground section between Range Hills Ramp – Swargate. Tunneling by TBM S78 commenced on December 7, 2019 and the first breakthrough was recorded on December 31.
Here’s what the future holds for each machine:
- TBM S78 has been sent to Surat Metro to work on Gulermak – Sam JV’s 3.46 km Package UG-1 (Kapodra Ramp – Surat Railway Station) along with a new S94 machine.
- TBM S79 performed a bulk of excavation (approx. 4.5 km) and will now likely be retired and cannibalized for parts.
- TBM S81 has been sent to Chennai Metro Phase 2 to work on Tata Projects’s 9 km Package TU-01 (Venugopal Nagar – Kellys section) along with 6 other machines.
With this development, I see the underground section opening up for operations no sooner than mid-2024 with the quantum of pending civil, systems, architectural finishing, testing and other activities to go. Prior to that we should see a part of the Aqua Line’s Reach 3 (7.657 km Civil Court – Ramwadi) opening up in 2023.