Revanth Reddy, Uttam Kumar to launch India’s first AEM survey for SLBC tunnel today

Hyderabad: Chief Minister A. Revanth Reddy and Irrigation Minister N. Uttam Kumar Reddy will today launch India’s first Aerial Electromagnetic (AEM) Survey for the Srisailam Left Bank Canal (SLBC) Tunnel. The initiative signals a new chapter in the use of advanced technology for Telangana’s irrigation projects.

AEM survey for the SLBC tunnel to deploy VTEM Plus technology

The National Geophysical Research Institute (NGRI) will conduct the heli-borne survey using VTEM Plus, a cutting-edge electromagnetic system that maps rock layers up to 1,000 metres deep. The system helps engineers detect fractures and weak zones before excavation, making the process faster and safer.

Officials explained that this marks India’s first helicopter-based geophysical survey for any tunnel project. Therefore, it will set a benchmark for modern infrastructure works. Moreover, the survey will guide planners in identifying stable geological routes for similar projects in the future.

SLBC tunnel to boost irrigation and drinking water supply

The 43.93 km SLBC tunnel, part of the Alimineti Madhava Reddy Project, ranks as the world’s longest tunnel under excavation without access shafts. Once operational, it will enable the gravity flow of Krishna River water to irrigate nearly 3 lakh acres. In addition, it will provide drinking water to fluoride-affected regions across Telangana.

Because the tunnel uses gravity-based flow, it will save about ₹500 crore in electricity costs every year by eliminating the need for pumping systems. The project, therefore, combines innovation, efficiency, and long-term sustainability.