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Bengaluru: Good news for Bengalurians as the under-construction Pink Line of Namma Metro is about to achieve two important milestones this week. As per Bangalore Metro Rail Corporation Limited (BMRCL), Tunnel Boring Machine (TBM) Bhadra which is currently excavating a north-bound 1,186-metre-long tunnel is about to achieve a breakthrough on February 7. The tunnel is being excavated from Venkateshpura to KG Halli. On the other hand, TBM Tunga which emerged from KG Halli in December last year after excavating 1,184.4 metres from Venkateshpura, is expected to run between KG Halli and Nagavara on February 1, reported Deccan Herald.
Notably, Bhadra line is slated for completion on the 21.26-km Pink Line, linking Kalena Agrahara to Nagavara via MG Road and Tannery Road.
The upcoming launch of the Tunga line will mark the third and final tunnelling assignment. Bhadra expected to undertake the final tunnel after its relaunch after the second breakthrough, is expected to start by late March.
The upcoming launch of Tunga line will mark the third and final tunnelling assignment. Bhadra expected to undertake the final tunnel after its relaunch after the second breakthrough, is expected to start by late March.
As many as nine tunnel boring machines have been deployed by the BMRCL to traverse 20.99 km on the Pink Line. Out of the nine machines, seven have completed their project, including Urja, Varada, Avni, Lavi, Vindhya, Vamika, and Rudra.
The completion deadline of the Pink Line is scheduled for March next year, with the final two drives expected to end in December 2024. Currently, Bhadra has tunnelled 1,120 metres out of the 1,184.4 metres, constructing 800 out of the 840 rings necessary for tunnel construction.
Each circular tunnel, broad up to 1.4 meters, will act as the sturdy concrete base for the metro railway lines.
Even though there were some minor setbacks, Tunga is now prepared for her subsequent chore, having undergone significant welding work on her cutter head. Sure, this welding requirement extended the timeline and added to the costs, but all hurdles for Tunga’s forthcoming deployment have been cleared, excluding some minor cylinder adjustment tasks.
Moreover, the construction progress on the Pink Line, with its 12 subterranean and half a dozen elevated stations, is racing at a rapid pace. Texmaco Rail and Engineering Ltd is in full swing laying tracks between the Cantonment to Venkateshpura stations.
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