Chennai (Metro Rail News): On 5 August, the Chennai Metro Phase 2 project achieved a milestone as the Tunnel Boring Machine (TBM) Siruvani reached its first breakthrough at Sterling Road Station. This achievement occurred in Corridor 3, which extends 45.4 kilometres from Madhavaram Milk Colony to Siruseri Sipcot.
TBM DZ1040, nicknamed Siruvani, achieved this milestone under package TU-02. This package encompasses a 12-km stretch linking Kellys and Taramani Road Junction.
Larsen & Toubro deployed the TBM Siruvani at Chetpet Station in September 2023 for its initial assignment. Over the course of its operation, the TBM excavated approximately 703 meters of tunnel, reaching Sterling Station on August 5. This drive also successfully included the crossing of 51 meters beneath the Cooum River, overcoming an overburden of 8.0 meters.
TBM Siruvani was the third of seven TBMs to be deployed to construct approximately 12 km of twin tunnels, totalling 24 km, between Kellys and Taramani Road Junction stations.
Package TU-02
In May 2021, Larsen & Toubro was awarded Package TU-02 by Chennai Metro Rail Ltd. (CMRL) for ₹2,385 crore, with a completion deadline of 42 months. This package involves constructing twin tunnels between Kellys and Taramani Road Junction, as well as diaphragm walls and entry/exit structures for Chetpet Station, Royapettah Government Hospital Station, Thiruvanmiyur Station, and a portion of the diaphragm wall for Greenways Road Station. It also includes the construction of launching and retrieval shafts at these stations.
Chennai Metro’s Line 3
Corridor 3 (Purple Line) of the Chennai Metro Rail Limited (CMRL) extends from Madhavaram Milk Colony to Siruseri Sipcot, covering a distance of 45.4 kilometres. This corridor features 28 underground stations and 19 elevated stations.
The project is part of CMRL’s extensive infrastructure development plan, supported by funding from multinational agencies, including JICA, ADB, AIIB, and NDB.
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