Kolkata to receive three underground tunnels for metro rail expansion
RAILWAYS & METRO RAIL

Kolkata to receive three underground tunnels for metro rail expansion

Kolkata is ready to receive three underground tunnels as part of the ongoing work to expand the metro rail network. As the sources indicate, the work is being carried out with precautions to protect the century-old building of the Calcutta Municipality.

As per the international rules, in case of a distance of two and a half kilometres or more between the two underground metro stations, a station must be constructed in the middle.

The distance between Sealdah and the Esplanade is more than two and a half kilometres in the East-West Metro project in Kolkata. The metro authorities thought of constructing a station at the Subodh Mallick Square as a result.

Due to lack of land at the place, a giant shaft or cavity resembling a well is being constructed there.

The tunnels are being built 13 meters below the ground. Two of them are ventilation tunnels, with an emergency tunnel below to enable a safe exit for the passengers and the entry point of the tunnel begins at 13 meters below the ground. The ending point of this shaft is going to be at least 22 meters below the ground, and the construction work is being done under continuous monitoring of the ITD engineers.

Dinesh Dani, the project engineer in charge, told the media that there are several aquifers in the place from where the water is drawn, and secondly, the century-old Calcutta Municipality building is not far from the tunnels' spot. He said that the vibration felt while digging the tunnel could also pose a problem for the floor of the Municipality and other nearby old buildings and that the work on that shaft is proceeding slowly but cautiously.

Image Source


Also read: Kolkata East-West metro project: Railways completes tunnelling work

Also read: Kolkata metro project: Govt permits RVNL to import 5,000 tonnes of steel

Kolkata is ready to receive three underground tunnels as part of the ongoing work to expand the metro rail network. As the sources indicate, the work is being carried out with precautions to protect the century-old building of the Calcutta Municipality. As per the international rules, in case of a distance of two and a half kilometres or more between the two underground metro stations, a station must be constructed in the middle. The distance between Sealdah and the Esplanade is more than two and a half kilometres in the East-West Metro project in Kolkata. The metro authorities thought of constructing a station at the Subodh Mallick Square as a result. Due to lack of land at the place, a giant shaft or cavity resembling a well is being constructed there. The tunnels are being built 13 meters below the ground. Two of them are ventilation tunnels, with an emergency tunnel below to enable a safe exit for the passengers and the entry point of the tunnel begins at 13 meters below the ground. The ending point of this shaft is going to be at least 22 meters below the ground, and the construction work is being done under continuous monitoring of the ITD engineers. Dinesh Dani, the project engineer in charge, told the media that there are several aquifers in the place from where the water is drawn, and secondly, the century-old Calcutta Municipality building is not far from the tunnels' spot. He said that the vibration felt while digging the tunnel could also pose a problem for the floor of the Municipality and other nearby old buildings and that the work on that shaft is proceeding slowly but cautiously. Image Source Also read: Kolkata East-West metro project: Railways completes tunnelling work Also read: Kolkata metro project: Govt permits RVNL to import 5,000 tonnes of steel

Next Story
Infrastructure Urban

India To Invest $37 Billion To Boost Petrochemical Capacity

India is set to become a major global player in the petrochemicals industry, driven by a planned capital expenditure of $37 billion (Rs 3.1 trillion) aimed at reducing import dependency and enhancing self-sufficiency, according to S&P Global Ratings.In its latest report titled “First China, Now India: Self-Sufficiency Goals Will Add To Petrochemicals Supply”, S&P said India’s large-scale capacity expansion—mirroring China’s earlier push—will likely intensify oversupply pressures in Asia’s petrochemical markets.Currently the world’s third-largest petrochemical consumer a..

Next Story
Infrastructure Transport

Indian Railways Expands Global Exports Of Rail Equipment

Indian Railways has announced that it is rapidly emerging as a global exporter of railway equipment, including bogies, coaches, locomotives, and propulsion systems, under the government’s ‘Make in India, Make for the World’ initiative.According to an official statement, India’s railway products are now reaching over 16 international markets, reflecting the country’s growing capacity to design, develop, and deliver world-class rail solutions.Metro coaches have been exported to Australia and Canada; bogies to the United Kingdom, Saudi Arabia, France, and Australia; propulsion systems t..

Next Story
Infrastructure Transport

RailTel Awards Rs 163 Million Contract To RTNS Technology

RailTel Corporation of India Limited (RailTel), a Mini Ratna Public Sector Undertaking, has awarded a domestic work order worth Rs 163 million to RTNS Technology Private Limited.The contract, issued on 30 September 2025, involves the supply and installation of equipment and related services for one of RailTel’s key customers. The project underscores RailTel’s commitment to advancing technology and communication infrastructure through collaboration with domestic system integrators.RTNS Technology Private Limited, an ISO-certified system integrator, provides comprehensive solutions for perim..

Advertisement

Subscribe to Our Newsletter

Get daily newsletters around different themes from Construction world.

STAY CONNECTED

Advertisement

Advertisement

Advertisement

Talk to us?