5Almand K,Liu Z G, Kashef A. North American road tunnel fire detection research project[C]. NRCC-48665, 2nd International Symposium on Tunnel Safety & Security, Madrid, Spain, 2006.
6Hu L H, Huo R, Yang R X, et al. Full scale experiments on studying smoke spread in a road tunnel[C]. Fire Safety Science-Proceedings of The Eighth International Symposium, Beijing, China, 2005.