Tunnel Fire Dynamic Early-Warning, Evacuation and Rescue System and Its Application

In this paper, by means of temperature data information collected by the FBG system, we establish a re? construction method for the source position, length of the inverse smoke-flow layer and cross section temperature distribution of a tunnel fire, which allows the reconstruction and visualization of fire behaviour in case of a tunnel fire and provides help for evacuation and rescue efforts in tunnels. Based on the tunnel fire dynamic early-warning,evacuation and rescue technology, we develop a tunnel fire dynamic early-warning, evacuation and rescue system that has been applied to the Dalianlu Tunnel. A site fire test is conducted to calibrate the key operation parameters of the system and verify its availability.