76,000+ segments to be cast for 16 km Bullet Train tunnel

24 May 2024 CW Team

A 21-kilometer tunnel is under construction between the Bandra Kurla Complex and Shilphata for the Mumbai-Ahmedabad Bullet Train Project. Of the total length, 16 kilometres will be excavated using three Tunnel Boring Machines (TBMs), while the remaining 5 kilometres will be constructed using the New Austrian Tunnelling Method (NATM).

To construct the 16-km section with TBMs, 76,940 segments will be cast to form 7,441 rings. Special ring segments are being cast for the tunnel lining, each ring comprising nine curved segments and one key segment, with each segment being 2 meters wide and 0.5 metres thick.

High-strength M70 grade concrete is being used to ensure superior structural integrity and long-term durability. The casting and stacking yard, covering an area of 98,898 sqm (9.9 hectares) in Mahape, Thane district, Maharashtra, is currently being commissioned. The yard will feature nine sets of moulds, each containing ten pieces. Four sets of these moulds are already being installed on-site.

The yard is equipped with various cranes, gantries, and machines to automate and mechanise the casting operations, ensuring high-quality assurance during the casting and stacking of the segments. Additionally, the facility will include casting sheds, a stacking area, a batching plant, and a steam curing area.

Infrastructure Transport

01 Jun 2026

MMRDA advances 250 m on Orange Gate–Marine Drive tunnel

The Mumbai Metropolitan Region Development Authority (MMRDA) has completed 250 m of underground tunnelling for the Orange Gate–Marine Drive Urban Road Tunnel using India’s largest slurry shield tunnel boring machine (TBM) deployed for an urban road project.The project involves twin tunnels extending over 7 km beneath critical transport corridors, including Central Railway, Western Railway and Metro Line 3. The work requires high-precision engineering to navigate densely developed urban infrastructure.Once completed, the tunnel is expected to reduce travel time between Orange Gate and Marin..

Hindustan Zinc Pays Rs 188.46 Billion in FY26

Hindustan Zinc contributed Rs 188.46 billion to the public exchequer in FY 2025-26, according to its 9th Tax Transparency Report. The contribution, equivalent to 46 per cent of the company’s revenue, included direct and indirect taxes, government royalties, dividends to the Government of India, withholding taxes and other statutory levies.The company’s five-year cumulative contribution to the exchequer stood at Rs 915.72 billion. In FY26, Hindustan Zinc reported revenue of Rs 408.44 billion, EBITDA of Rs 221.62 billion and profit after tax of Rs 138.32 billion. It also achieved its highest..

World of Concrete India 2026 Opens in Mumbai

Informa Markets in India will host the 12th edition of World of Concrete India 2026 from 3–5 June 2026 at the Bombay Exhibition Centre, Mumbai. The specialised B2B exhibition will bring together manufacturers, suppliers, contractors, developers, architects, consultants, infrastructure companies, project leaders and government stakeholders.The event is expected to feature over 350 brands and more than 18,000 trade professionals. It will cover concrete and cement, dry mortar, precast technologies, formwork, construction chemicals, industrial and commercial flooring, scaffolding, safety solutio..