NewzVille Desk
In the ongoing Mumbai–Ahmedabad Bullet Train Project, a major engineering milestone has been achieved, with the successful breakthrough of the third mountain tunnel (MT-07) at Ambesari village in Dahanu Taluka of Palghar district, Maharashtra.
With this achievement, three mountain tunnel breakthroughs have now been completed in Maharashtra within the last five months, reflecting rapid progress in one of the most technically challenging sections of India’s first high-speed rail corridor.
The newly completed MT-07 mountain tunnel is 417 metres long and 14.4 metres wide, designed to accommodate both up and down tracks of the Bullet Train corridor. The tunnel was excavated through a controlled drilling and blasting method from both ends, supported by advanced engineering and safety protocols.
Throughout the excavation process, sophisticated monitoring systems and geotechnical instruments were deployed to ensure structural stability, worker safety and precision execution.
Real-time monitoring arrangements including Surface Settlement Points (SSP), 3D targets, strain gauges and seismographs continuously monitored vibrations, tunnel behaviour and surrounding structures.
Comprehensive worker-safety measures including ventilation systems, fire-safety arrangements, controlled access and continuous geotechnical supervision were maintained during tunnelling operations.
