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TBM RECORDER Terratec unveils third TBM for Delhi metro 14 Feb 2013
After a successful workshop testing, Terratec delivered the third of six TBMs it will supply to India for the Delhi Metro Phase III project.

Factory acceptance of the new EPBM for Delhi Metro

The TBM was unveiled at a ceremony that included representatives from the client, the JV of J.Kumar Infraprojects Ltd of India and China Railway Third Group (CRTG) of China.
The new EPBMs will be used on the twin running tunnels between Lajpat Nagar and Hazrat Nizamuddin Stations on the pink (colour) Line

The new EPBMs will be used on the twin running tunnels between Lajpat Nagar and Hazrat Nizamuddin Stations (inset)

The machine will be used for excavation of the twin running tunnels between Lajpat Nagar and Hazrat Nizamuddin Stations which are part of the Delhi Metro Contract CC-24. Both stations are part of the underground works for the Mukundpur - Yamuna Vihar corridor - Phase III of the Delhi MRTS project. The JV intends to use a total of two TBMs for the contract, which is expected to be completed by 2016. Terratec will deliver the second TBM in March 2013.
For the first time on the Delhi Metro, the tunnels will pass beneath tunnels of an existing metro line. The total combined distance that each TBM will bore is approximately 3,400m.
The customized TBM is a 6.61m diameter EPB shield that includes features such as a VFD electric driven cutterhead, a versatile design of the cutting tools that are interchangeable with 17in roller disc cutters, an active articulation for the shield, and a two-part through-the-tail-shield annular backfilling system.
The universal segment lining has an o.d. of 6,350mm, and i.d. of 5,800mm and a ring width of 1,400mm.
Delhi is India's fastest growing city and as such, there is a growing demand for additional transportation as the population grows and expands. Phase III focuses on more of the outer lying areas of New Delhi and will have a total of 28 underground stations. Once Phase III is completed, the Metro will cover 70% of Delhi.
References
Terratec rolls out Delhi Metro TBMs - TunnelTalk, December 2012
Terratec delivers for the Bangkok Metro Blue Line Extension - TunnelTalk, September 2012

           

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