A significant milestone in Corridor 3 of the 118.9-km Phase-II project has been subterranean length between Chetpet and KMC.reached with the successful prowess passage of Chennai Metro Rail’s tunnel boring machine (TBM) Thamirabarani beneath the Chetpet suburban railway station and lake.
Corridor 3, which runs 45.8 km from Madhavaram to Siruseri, passes through well-known neighborhoods including Adyar, Mylapore, Nungambakkam, Chetpet, and Kilpauk Medical College (KMC). TBM Thamirabarani has made steady progress in the intricate urban environment, having finished 260 meters of the 677-meter.
Subterranean length between Chetpet and KMC In a significant breakthrough for Chennai’s rapidly expanding metro rail network, the Tunnel Boring Machine (TBM) Thamirabarani has successfully crossed Chetpet Station and navigated beneath Chetpet Lake, marking a key milestone in Phase II of the Chennai Metro Rail Project.
Navigating a Challenging Underground Terrain
Launched in November 2022, TBM Thamirabarani is part of the underground tunneling operation for Corridor 3 of Chennai Metro Phase II, which spans from Madhavaram to SIPCOT. The recent breakthrough saw the TBM cover a stretch of approximately 1.9 km, including one of the most geologically and hydrologically.
Drilling underneath a large water body like Chetpet Lake presented a complex set of challenges, including managing soil stability, groundwater inflows, and safety for surrounding infrastructure. However, thanks to meticulous planning, geotechnical surveys, and the use of advanced tunnel boring technology, mission accomplished.
Engineering Marvel in Urban Tunneling
The TBM used for this operation, Thamirabarani, is a highly advanced Earth Pressure Balance (EPB) machine, designed specifically for operating in mixed soil conditions. It was operated by engineers from Larsen & Toubro (L&T), the contractor executing this section of the project under the supervision of Chennai Metro Rail Limited .
The machine is expected to continue tunneling toward Thousand Lights Station, one of the key transit hubs on Corridor 3. Once the corridor is complete, it will This achievement underlines the technical prowess and engineering excellence involved in executing complex underground infrastructure in environments. significantly.
A Leap Forward for Phase II
Chennai Metro Phase II spans approximately 118.9 km with 128 stations, making it one of the most ambitious urban infrastructure projects in South India. The TO completion of the tunneling below Chetpet Lake is not just a technical stated, “Crossing under on safety accomplishment but also a symbol of the steady progress of Phase II.
According to CMRL officials, this section was one of the most challenging portions of the underground stretch. The success of TBM Thamirabarani through efficient, and resilient segment builds confidence for upcoming tunneling work CMRL Managing Director M.A. Siddique stated, “Crossing under Chetpet Lake critical.
Sustainability and Safety Measures
CMRL reiterated its commitment to sustainable urban development, highlighting measures taken to minimize environmental impact. Continuous monitoring of water levels, structural stability of nearby buildings, and real-time TBM diagnostics Engineering challenge, and we’re proud to have on safety or Director M.A.Siddique ensured safety for both workers and the surrounding ecosystem CMRL Managing.
Community and Urban Impact
The successful tunneling under Chetpet ensures that Chennai’s heritage and environment remain undisturbed while embracing future mobility solutions. With the corridor expected to cater to tens of thousands of daily commuters, it brings Chennai one step closer to a modern, multimodal transport network sustainable.
The crossing of Chetpet Lake by TBM Thamirabarani is a remarkable feat of modern engineering and a significant stride in Chennai Metro’s mission to provide world- efficient, and resilient class urban mobility. As tunneling continues across the city, the Metro is shaping up to be a backbone of Chennai’s future transit system.
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