Buying a TBM?

28 Jun 2025 CW Team

Tunnel-boring machines (TBMs) are increasingly being used in India for metro, rail and other infrastructure projects. Choosing the right TBM is vital to work efficiently, speedily and safely. Here’s a guide on how to make the right choice.

Geological compatibility

TBMs are specifically designed and customised to suit the unique geological and geotechnical conditions of the area where tunnelling will take place. So, an extensive and thorough geotechnical investigation is conducted prior to the machine’s design and fabrication.

“The tunnelling company accurately compiles soil sampling findings, rock quality assessments, groundwater studies and analysis of geological faults or anomalies and provides these to the TBM original equipment manufacturers (OEMs), who use this critical data to engineer and manufacture a TBM that can efficiently and safely navigate the anticipated ground conditions, while minimising risks and maximising performance,” explains Kapil Raman, President and COO, Building and Infrastructure SBU, Tata Projects...

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