ITD Cementation India on Thursday commissioned their first tunnel boring machine, Bhadra (S-840B), at Venkateshpura Station on Bangalore Metro’s 21.386 km Pink Line (Reach 6).
This refurbished Herrenknecht mixed-shield EPB machine, along with its sister machine TBM Tunga (S-839), will build four tunnels each for the 73.92 km Bangalore Metro Phase 2 project’s 4.591 km package RT-04 (Tannery Road – North Ramp) in north Bengaluru.
ITD’s scope of work involves building a combined total of 6.34 km twin tunnels, roughly 360 meter ramp at Nagawara, and four stations at Tannery Road, Venkateshpura, Kadugundanahalli (formerly Arabic College) and Nagawara.
As shared earlier – for its first assignment, both machines will first travel 822.99m south from Venkateshpura to Tannery Road, pass through the station box and tunnel another 209.585m towards a dedicated TBM retrieval shaft.
After its southern assignment, the machines will be brought back to Venkateshpura for tunneling 1172.16m northwards towards Kadugundanahalli and a further 916.709m to Nagawara Station’s TBM retrieval shaft.
A total of 9 TBMs will be deployed by Afcons (3), Larsen & Toubro (4) and ITD Cementation (2) for constructing the city’s Pink Line. With this development – 7 of those have been commissioned and parts of two are being configured for commissioning.
Here’s a status of each machine with figures displayed from BMRCL’s June newsletter which now reveals the names of Afcons’ 3 machines as Rudra, Vamika and Varada. Interestingly, L&T’s TBM Vindhya – working on the Cantonment to Shivajinagar section – has made literally no progress when compared to the May newsletter.
|S-1259 (Rudra)||Commissioned in April 2021 (4/1480 rings erected)|
|S-1260 (Vamika)||Getting configured for commissioning (Parts arrived in December)|
|S-1264 (Varada)||Commissioned in March 2021 (Unknown/596m – “15% completed”)|
|DZ669 (Avni)||Commissioned in Sept 2020 (505.5/1089m)|
|DZ670 (Urja)||Commissioned in July 2020 (478.5/860m)|
|DZ671 (Vindhya)||Commissioned in October 2020 (381/860m)|
|DZ672 (Lavi)||Commissioned in February 2021 (189/1089m)|
|S-839B (Tunga)||Getting configured for commissioning|
|S-840B (Bhadra)||Commissioned in June 2021 (this post!)|
For more updates, check out my Home Page!
Hat-tip: Christin Mathew Philip