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Tata Projects complete challenging tunnel work beneath busy railway zone in Chennai
TBM "Kalvarayan" reaches Perambur south shaft after boring 867-metre tunnel between Ayanavaram and Perambur stations.
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://www.newindianexpress.com/cities/chennai/2025/May/15/tunnel-work-beneath-busy-railway-zone-complete-in-chennai
Tunnel work beneath busy railway zone complete in Chennai
www.newindianexpress.comThe tunnel boring machine, named Kalvarayan, completed its 867-metre journey between Ayanavaram and Perambur stations, surfacing at the Perambur south shaft.