Mavala Tunnel Boring Machine successfully dismantled after breakthrough

23 Aug 2023 CW Team

The Mavala tunnel boring apparatus, employed for excavating two tunnels along the Coastal Road, has undergone disassembly. The final breakthrough of the tunnel occurred on May 31. Subsequently, the disassembly process commenced and concluded on July 31.

According to Manthaiya Swami, the Chief Engineer of the Coastal Road project, he mentioned, "The process of dismantling the immense machine took a span of two months. It was disassembled into five components: the cutter head, steel structure, and three gantries were detached."

Regarding the tunnelling activities between Orange Gate and Marine Lines, there's a possibility of employing this machine, given that the dimensions of the tunnels need to match those of the Coastal Road.

Originally procured from China by the L&T company, the Mavala machine is now under the ownership of the same company.

Manufactured by the China Railway Construction Heavy Industry Company (CRCHIL), the tunnel boring machine was christened 'Mavala' after the mountain warfare experts of Chhatrapati Shivaji Maharaj. With a weight surpassing 2,800 tonnes and a diameter of 12.19 meters (equivalent to the height of a five-story building), Mavala stands as the largest tunnel boring machine ever used for tunneling in India's history.

Initiating in January 2021 from Priyadarshini Park at Nepean Sea Road, the excavation of the first tunnel commenced. Back then, Chief Minister Uddhav Thackeray marked the occasion with a Bhoomipoojan ceremony at the launch site in Priyadarshini Park. The first breakthrough was achieved in January 2022 at the southern end of the tunnel in Girgaon. After this milestone, Mavala was shifted towards the left, and in April 2022, mining for the second tunnel was initiated. The breakthrough for the second tunnel occurred in May 2023, graced by the presence of Chief Minister Eknath Shinde and Deputy CM Devendra Fadnavis.

Infrastructure Transport

16 Sep 2025

Metro Line 2B Phase 1 to Boost Realty in Mumbai’s Eastern Suburbs

Mumbai’s real estate sector is set for a major boost as Phase 1 of Metro Line 2B, between Mandale and Diamond Garden, nears completion. The Mumbai Metropolitan Region Development Authority (MMRDA) has confirmed that mandatory rectifications are done, and inspections by the Commissioner of Metro Railway Safety (CMRS) have been carried out. The 5.39-km stretch with five stations forms part of the larger DN Nagar–Mandale corridor, designed to ease congestion and improve east–west connectivity. Passenger operations are expected by December 2025, with the full line slated for 2027. ..

WattPower wins Best Inverter award at Global Solar Expo 2025

WattPower, a leading renewable energy solutions provider, has won the award for “Best Inverter in the Utility Segment” at the Global Solar Expo 2025. The recognition underscores the company’s commitment to delivering reliable, high-performance and future-ready solar solutions for large-scale projects. At the forefront of utility-scale solar, WattPower manufactures advanced string inverters that directly feed power into the Indian grid. With robust technology, high-quality components and comprehensive product lifecycle support, its solutions stand among the most sophisticated in the ..

Awfis delivers 67,000 sq. ft. innovation hub for eBay in Bengaluru

Awfis Space Solutions, India’s largest flexible workspace provider and the first publicly listed workspace solutions platform, has partnered with eBay to establish a 67,000 sq. ft. innovation hub at Embassy Tech Village, Bengaluru. The mandate covers design, build and management of the new office, which will act as a strategic hub supporting diverse functions and accelerating eBay’s AI-first commerce strategy. The centre will focus on artificial intelligence, engineering, product development and applied research, strengthening eBay’s growth in India. Embassy Tech Village, North Beng..