Risk assessment of fire emergency ventilation strategies during traffic congestion in unidirectional tunnels with longitudinal ventilation

B. Kohl, O. Senekowitsch, I. Nakahori, T. Sakaguchi, A. E. Vardy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Four possible strategies for ventilation response to fire in a unidirectional tunnel are compared quantitatively for three traffic conditions (congested, stop-and-go, free-flowing) and three fire sizes (5MW, 30MW, 100MW). The overall risk of each strategy for all nine combinations of traffic and fire are assessed using the Austrian tunnel risk model TuRisMo applied to a representative tunnel that is 3km long and has realistic gradients. It is found that commonly-existing strategies such as maintaining airflow in the original traffic direction are appropriate for free-flowing traffic, but that a zero-flow strategy previously proposed for bidirectional tunnels has strong advantages in the event of congested traffic or stop-and-go traffic.

Original languageEnglish
Title of host publication17th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2017, ISAVFT 2017
Place of PublicationUnited States
PublisherBHR Group Limited
Pages457-471
Number of pages15
ISBN (Print)9781510851665
Publication statusPublished - Dec 2017
Event17th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2017, ISAVFT 2017 - Lyon, France
Duration: 13 Sep 201715 Sep 2017

Conference

Conference17th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2017, ISAVFT 2017
CountryFrance
CityLyon
Period13/09/1715/09/17

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  • Cite this

    Kohl, B., Senekowitsch, O., Nakahori, I., Sakaguchi, T., & Vardy, A. E. (2017). Risk assessment of fire emergency ventilation strategies during traffic congestion in unidirectional tunnels with longitudinal ventilation. In 17th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2017, ISAVFT 2017 (pp. 457-471). BHR Group Limited.