The flexible rockfall tunnel is constructed at a location where there is the highest probability of falling rock boulders, shooting rock particles near the hillside roadway, and entrance and exit of the hilly tunnels. Sometimes avalanches of rolling rock fragments also hit the mountain road traffic, thereby disrupting the traffic and causing unsafe traffic conditions. This kind of flexible shed protects from the shooting stones to prevent damage to the roadway network and provide the safe movement of traffic alongside the rockfall hazard zone.

The flexible protective shed tunnel comprises of the supports, shed, and energy-shock absorbers. In this, energy shock absorbers are mainly connected to the shed and supports. The shed is an arch-type of tunnel form a structure and comprises of the main arch rings of a light steel frame structure integrally connected to the round support tubes arranged in a mesh form. The flexible protective nets are mounted outside of the shed of main arch rings; the protective nets are annual steel omega-shaped wire nets, which are especially used in the mountains rockfall barrier net. The flexible protective shed tunnel is simple in structure, effective in protection, easy in construction, easy, and particularly applicable to rockfall hazard zone lying near bridges, tunnels, and mountain networks.