Examples of safer tunnels with new tunnel ventilation and smoke exhaust systems and jet fans
(pdf-file of 660 kB)
In 2001, the system was developed for a new 1,528 m long cut and cover road tunnel in Germany, with one tube for two-way traffic on two lanes, designed on basis of the findings and results from international research work.
With this method, a new safety standard for road tunnels has been introduced as state of the art.
Smoke distribution from a tunnel fire into the open
(pdf-file of 145 kB)
Example of a numerical simulation of the smoke plume generated by a 30 MW tunnel fire and discharged through several exhaust shafts into the open, calculated for all wind directions by a CFD-simulation program (MISKAM) to determine and represent the local concentrations of harmful pollutants, such as the CO-gas concentration.
Report from a realistic,
full-scale tunnel fire test
(German pdf-file of 36 kB)
Experience with a new
smoke exhaust system
(German pdf-file of 1,5 MB)
Function and performance of a new smoke exhaust system tested by a realistic, full-scale fire test with two passenger cars burned with a HRR of 12 MW in the Malbergtunnel at Bad Ems.
Pictures from a realistic,
full-scale fire test
(pdf-file of 3,5 MB)
(German pdf-file of 9,6 MB)
Example of an expert study for the ventilation and smoke exhaust system of the planned road tunnel from 2004, intended as an under-crossing of the new NW-landing run-way at the Frankfurt International Airport (pages 37-64).
(Note: In 2006 this study was up-dated on basis of the new German Tunnel Safety Standard (RABT 2006).
