UNDERWATER TUNNEL HAVING SHUTTER

摘要

Disclosed is an underwater channel installed between the seabed and the sea surface. The underwater channel includes: a tunnel wall; a pair of shutter installation units which is arranged on the tunnel wall to be spaced apart at a predetermined gap; and a pair of shutters installed on the respective shutter installation units. A pair of shutters falls to the floor of the underwater tunnel in case of an emergency to block the internal space of the underwater channel between the shutter installation units to prevent the damage to the tunnel structure from spreading.