Chennai Metro Rail floats tender for 5.8 km underground stretch

04 Jan 2022 CW Team

Chennai Metro Rail Limited (CMRL) has once again invited bids in 2021. The bids are for Phase-II 5. 8 km underground stretch between Kolathur and Nathamuni. It is also considered to be one of the most difficult underground stretches.

The rocky soil condition of the stretch is what makes it challenging. The first tender had been floated for the same in January last year. It is a part of the six construction tenders that were canceled due to various reasons including not having many proposals or proposals being higher than the estimated price. The total Phase-II underground stretch of 118.9 km will be approximately completed by the end of 2025.

On corridor 5 between Madhavaram and Sholinganallur, there is only a single underground stretch of 5.8 km between Kolathur and Nathamuni. The CMRL has sent invitations for the construction of underground lines along with the twin tunnels for upline as well as a downline. The duration of the project completion will be 3.8 years.

The initial soil investigation by CRML stated that the soil conditions are the reason why the construction is going to be tough.

The soil is mainly like black granite or like quartz or charnockite. The tunnel boring machines need to be operated at a suitable speed of 8 meters every day. And it is going to be a challenge for the engineer. Otherwise, the surrounding buildings can suffer. The depth of the tunnels is going to be between 15 meters to 21 meters.

Image Source

Infrastructure Urban

05 Nov 2025

TBO Tek Q2 Profit Climbs 12%, Revenue Surges 26% YoY

TBO Tek Limited one of the world’s largest travel distribution platforms, reported a solid performance for Q2 FY26 with a 26 per cent year-on-year increase in revenue to Rs 5.68 billion, reflecting broad-based growth and improving profitability.The company recorded a Gross Transaction Value (GTV) of Rs 8,901 crore, up 12 per cent YoY, driven by strong performance across Europe, MEA, and APAC regions. Adjusted EBITDA before acquisition-related costs stood at Rs 1.04 billion, up 16 per cent YoY, translating into an 18.32 per cent margin compared to 16.56 per cent in Q1 FY26. Profit after tax r..

Northern Graphite, Rain Carbon Secure R&D Grant for Greener Battery Materials

Northern Graphite Corporation and Rain Carbon Canada Inc, a subsidiary of Rain Carbon Inc, have jointly received up to C$860,000 (€530,000) in funding under the Canada–Germany Collaborative Industrial Research and Development Programme to develop sustainable battery anode materials.The two-year, C$2.2 million project aims to transform natural graphite processing by-products into high-performance, battery-grade anode material (BAM). Supported by the National Research Council of Canada Industrial Research Assistance Programme (NRC IRAP) and Germany’s Federal Ministry for Economic Affairs a..

Antony Waste Q2 Revenue Jumps 16%; Subsidiary Wins Rs 3,200 Cr WtE Projects

Antony Waste Handling Cell Limited (AWHCL), a leading player in India’s municipal solid waste management sector, announced a 16 per cent year-on-year increase in total operating revenue to Rs 2.33 billion for Q2 FY26. The growth was driven by higher waste volumes, escalated contracts, and strong operational execution.EBITDA rose 18 per cent to Rs 570 million, with margins steady at 21.6 per cent, while profit after tax stood at Rs 173 million, up 13 per cent YoY. Revenue from Municipal Solid Waste Collection and Transportation (MSW C&T) reached Rs 1.605 billion, and MSW Processing re..