ITD Unearths Kolkata Metro’s TBMs Urvi & Chandi at Bowbazar
Workers from ITD Cementation have over the past month reached the bottom of Bowbazar Shaft to begin dismantling two tunnel boring machines that built a portion of Kolkata Metro’s east-west Line-2.
Both Ø6.65m Herrenknecht EPB sister machines are currently facing one another at Bowbazar where TBM Chandi (S-615), working on the west-bound down-line tunnel between Esplanade – Sealdah, came to an abrupt halt in August 2019 after it hit an aquifer which led to heavy soil displacement and collapse of several buildings.
Pending tunneling work of 800m was completed by TBM Urvi (S-616) with a historic final breakthrough for the entire 16.34 km line getting recorded in May 2021.
Here are some snaps shot at different times over the past 30 days. Barring Urvi’s cutterhead, parts of Chandi (facing east towards Sealdah) are being pulled out first.
After both machines’ parts are removed, the base slab RCC flooring and roof work will be completed, and soil will be backfilled.
While the 2.1 km Phoolbagan – Sealdah section of Line-2 should open in Q2 2022, I see the rest of the line (Sealdah – Howrah Maidan) opening up no sooner than mid-2023 looking at the quantum of pending systems, architectural finishing, testing and other activities to go.
For more updates, check out the Kolkata section or my Home Page!
At last after 28months
Great achievement. Thanks to Afcons, ITD, KMRVL.
Retrieving Two TBMs in difficult situation without affecting otherwise ready tunnel is challenging. Unless this work is completed service to Sealdah should not be started. ITD personal are doing a great job.
Unless two TBM s are retrieved and tunnel is complete service to Sealdah should not be started. ITD personal are doing a great job.
Sealdah station is ready for operations except CRS inspection and nod from railway board. Its operation will not effect Durga Pathuri shaft work and retreival of TBMs.
Thanks for the news and excellent pictures of the shaft and the two TBMs. Please keep us updated about the progress of the work at Durga Pathuri shaft. You are the only source of information about the work at Bowbazaar
What is the latest status of the TBM retrival ?
Any latest news about Durga Pathuri. The last great news with pictures u posted was on December 20th.
Base slab of shaft is being cast to pull out rest of the machine. Will tweet some snaps soon.
Thanks for the reply. Eagerly looking forward for the snaps. Any idea when will the shaft work be completed.
Any latest news on Durga Pathuri shaft and also the snaps u had promised.
Here you go – https://twitter.com/TheMetroRailGuy/status/1500332343525052421
Thanks for the great pics on twitter. U are doing great work in giving railway, metro and transport related information. And about Durga Pithuri shaft work u can be said to be sole giver of information and most importantly with pics.
Any latest news or pictures about Durga Pathuri Shaft of East West metro.
Hi, will try sourcing some for Twitter
Can you explain by a proper drawing what exactly happened on 11th May, 2022, causing again the aquefiers to leak into tunnel and again cause building’s damage?
Yes according to reports, 11 pockets of water were entering the tunnel. 10 pockets has been sealed but 1 is still to be plugged. Please can u give us correct information what has happened.
Any latest information on the problems that happened in May at Durga Pathuri shaft of line 2, Green line, East West metro. Will be great if u could give some information.