| 摘要 |
A method and system for extinguishing fires in road or railway tunnels, in which a plurality of smoke and/or heat sensor devices are distributed in successive regions of the tunnel, each sensor being connected to and controlling a pumping system which feeds water to independent separate stations in which water and foaming liquid are mixed to form a fire-extinguishing foaming mixture used to feed under pressure a plurality of delivery nozzles located only in that tunnel region in which the smoke and/or heat has been sensed, in each of said regions the nozzles being provided on both sides of the tunnel and being distributed on each side at two different levels to direct the jets of mixture mainly towards the floor and onto the lower part of the tunnel and, respectively, towards the floor and the opposite wall of said tunnel. <IMAGE> |
