The tunneling work has commenced at Ayanavaram for Chennai Metro Rail Project Phase-II. At Ayanavaram, two tunnel boring machines (TBM) are likely to be used for construction of underground network towards Perambur and Otteri, respectively. Currently, one TBM has already tunneled about 100 meters towards Perambur, while the other has drilled nearly 50 meters towards Otteri.
The project involves development of 118.9-km three metro corridors (Corridor III, IV and V) in Chennai city of Tamil Nadu. It is mostly underground with elevated section confined to few short stretches and consists of 128 stations in total. The work on Corridors I and II have been completed under Chennai metro Phase-I.
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