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Metro tunnelling completed between Ayanavaram and Otteri

A tunnel boring machine named Anaimalai completed tunnelling between Ayanavaram metro and Otteri metro on Thursday and achieved a breakthrough as part of the 116.1km phase-2 projectA release said Anaimalai, which started tunnelling on October 23, 2023, built a 925metre-long tunnel and reached the shaft at Otteri metro.

CMRL managing director M A Siddique and other officials were present during the breakthrough event.The stretch from Ayanavaram to Otteri is part of the 9km underground section on the 45.4km corridor-3 from Madhavaram Milk Colony to Siruseri Sipcot.

A total of seven tunnel boring machines have been mobilised for tunnelling work in the stretch.Phase-2 has three corridors covering 116.1km. A total of 23 tunnel boring machines will be used for tunnelling work in the project.

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