Ahmedabad, June 14 -- Tunnel Hoods are being installed at mountain tunnel portals on the Mumbai-Ahmedabad Bullet Train Project. This is the first time such tunnel hood technology has been designed and implemented for railway tunnels in India.

The Mumbai-Ahmedabad Bullet Train corridor traverses challenging terrain and includes seven mountain tunnels in Maharashtra and one mountain tunnel in Gujarat. Tunnel hoods are being provided at both ends of these mountain tunnels.

When a high-speed train enters a tunnel, it pushes a large volume of air ahead of it, similar to a piston moving inside a cylinder. This sudden compression of air generates pressure waves that travel through the tunnel. If not properly managed, these pressure waves can c...