Chennai metro collects soil samples from Adyar bed from next week

29 Apr 2022 CW Team

Starting next week, a team of engineers of Chennai metro will collect samples from the Adyar river bed ahead of tunnel construction to operate driverless trains. The test will be finished before tunnelling starts in October.

Twin for about 400 m lengths will be built under the river up to 29 m depth to connect Greenways Road metro station with Adyar junction station. For the three corridors 118.9 km phase-2 project, the deadline is 2025.

A metro rail official told the media that the samples would be collected at 12 m to 18 m depth for every 25 m to 50 m distance. Two drilling rigs will be deployed in specially designed boats measuring 10 m X 6 m.

It will take at least three to four months to finish the soil sample collection and investigation. Now, the water flowing in the river is at 6 m depth, so we require boats to take the rigs for sample collection.

While Chennai Metro Rail Limited (CMRL) had conducted soil tests before awarding construction contracts, the contractors were offered an option to do their tests. Thick sturdy tunnels will be constructed through rocky soil strata under the river, with heavily reinforced concrete slabs and additional grouting to seal the surface to ensure no water seepage.

In phase-1, tunnels were constructed under Buckingham Canal at about 30 m depth. Special tunnel rings with heavy reinforcement were created and established to counter the load from the top overburdened crust and the canal water. Under the Adyar river, the top of the tunnel will be at 18.75 m to 22.35 m depth from the river bed, while the bottom of the tunnel will be 25.05 m to 28.65 m depths.

Image Source

Also read: Construction work on Phase-2 Metro rail to begin soon in Chennai

Products

07 Jul 2026

EUROBOND Expands NABL Accreditation to 51 Testing Parameters

EUROBOND, the flagship brand of Euro Panel Products, has expanded the National Accreditation Board for Testing and Calibration Laboratories (NABL) accreditation of its in-house laboratory from 16 to 51 mechanical and chemical testing parameters, making it the only Indian aluminium composite panel (ACP) manufacturer with accreditation covering such an extensive testing scope.The expanded accreditation enables the company to independently test coils, coatings, cores, aluminium composite panels (ACP) and metal composite panels (MCP) in accordance with international standards, including IS, ASTM, ..

Dubai Property Sales Rise as Rental Activity Hits Record High

Dubai's real estate market recorded its highest-ever monthly rental activity in June, while property sales rose sharply in both value and volume, reflecting sustained demand across the emirate's residential and commercial sectors.According to a market analysis by fäm Properties based on DXBinteract data, 40,022 rental contracts were registered during the month, the highest monthly total on record. New rental contracts increased 48.6 per cent year on year to 19,245, while renewals rose 28.5 per cent to 20,777.Property sales reached 13,933 transactions worth AED33.2 billion in June, representin..

Isprava Partners Courtside to Launch Luxury Padel Experience

Luxury home developer Isprava has partnered with Courtside, Mumbai's first padel social club, to launch The Isprava Court, integrating its design-led lifestyle proposition with one of the city's emerging sporting destinations.Located on the rooftop of Atria Mall in Worli, Courtside spans 20,000 sq ft and combines padel, wellness, hospitality and community experiences. Since opening in February 2026, the venue has positioned itself as a social hub for sports and lifestyle enthusiasts.The Isprava Court features curated brand elements, including bespoke court branding, branded nets, towels and ac..