Mumbai, June 2 -- The breakthrough in the third mountain tunnel in Maharashtra has been achieved for the Mumbai-Ahmedabad Bullet Train Project at Ambesari village in Dahanu Taluka of Palghar district.

The tunnel is 417 metres long and 14.4 metres wide, designed to accommodate both up and down tracks of the Bullet Train corridor.

The excavation was carried out using the controlled drilling and blasting method from both ends. Advanced monitoring systems and geotechnical instruments were deployed throughout the excavation process to ensure structural stability and safety.

Real-time monitoring systems, including Surface Settlement Points (SSP), 3D targets, strain gauges, and seismographs, were installed for continuous monitoring of vibrati...