Terratec’s has delivered three machine orders for the Delhi Metro Rail Corporation Limited’s Phase-IV Delhi Mass Rapid Transit System Project, including a new Rock TBM (S111) for the construction of the Silver Line tunnel. The machine, named “Narayani,” is the third deployment by J.Kumar for twin tunnels. The TBM is manufactured and assembled in India, with key components from overseas and high-quality equipment. The project will face mixed ground geological conditions and will require 1,400mm wide by 275mm thick universal reinforced concrete lining rings. Delhi Metro continues to redefine India’s urban transport landscape with every expansion phase. The upcoming Phase-IV of Delhi Metro marks another
milestone in this journey, and Terratec’s Rock Tunnel Boring Machine (TBM) will play a crucial role in ensuring its success. This advanced tunnelling technology is a game-changer for large-scale infrastructure projects, especially in challenging geological terrains like those found in the capital city (Delhi Metro Rail) The Delhi Metro Rail Corporation (DMRC) has consistently delivered one of the most reliable metro systems in the world. Phase-IV aims to extend the metro network to new areas, reducing road congestion and providing sustainable connectivity. With over 100 km of additional lines planned, the inclusion of underground stretches requires efficient and safe tunnelling methods. You can read more about DMRC projects
Delhi Metro Phase-IV and Its Importance
Terratec, an internationally recognized TBM manufacturer, has introduced a specialized Rock Tunnel Boring Machine for Phase-IV. Unlike conventional tunnelling methods, this TBM is designed to bore through Delhi’s complex rock strata with precision and speed. Such machines not only improve efficiency but also minimize risks for workers and commuters. For global insights on TBM technology, refer to the International Tunneling Association The deployment of this TBM underscores India’s ambition to match international standards in infrastructure. With Phase-IV’s underground stretches set to cover dense and geologically complex zones, advanced tunnelling machines are essential. Faster tunnelling will reduce project delays, ensuring timely launch of metro corridors.
Traditional tunnelling often disrupts the surrounding environment. Terratec’s Rock TBM, however, reduces noise, vibration, and dust pollution. This is crucial in a city like Delhi, which struggles with environmental concerns. Sustainable construction practices like these are endorsed by the Indian Green Building Council Further emphasizing their long-term benefits. Once completed, Delhi Metro Phase-IV will add significant capacity to the city’s transport system. Commuters traveling long distances across Delhi and NCR will save time and experience more reliable transit. By expanding underground connectivity, the metro also ensures that surface-level congestion is minimized, improving quality of life for millions.
Delhi Metro’s ongoing projects connect with major urban transport initiatives across India, These linkages highlight a larger narrative of India’s metro revolution, where technology-driven solutions like TBMs are at the forefront of progress This aligns with India’s broader (Green Building) infrastructure development goals Terratec’s Rock TBM is not just a machine—it is a symbol of India’s growing technological prowess in infrastructure. As Delhi Metro Phase-IV progresses, commuters and stakeholders alike can expect faster delivery, improved safety, and sustainable development. This breakthrough reflects how international expertise and local execution can come together to shape the future of urban mobility in India.
Q1. What is Terratec’s Rock TBM?
Terratec’s Rock TBM is a high-performance tunnel boring machine designed to cut through hard rock efficiently.
Q2. Why is it important for Delhi Metro Phase-IV?
It enables faster tunnelling in difficult geology, ensuring timely project completion.
Q3. Where will the TBM be used in Phase-IV?
It will be deployed on key underground corridors requiring advanced tunnelling solutions.
Q4. How does this technology benefit commuters?
It speeds up construction, reduces disruptions, and ensures safer underground transport.
Q5. What makes Terratec a leader in TBM technology?
The company specializes in custom TBM designs suited for varied geological challenges worldwide.



























