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Study on the influence of air supply and smoke exhaust on full transverse exhaust of long highway tunnel

Auteur(s): ORCID

ORCID


ORCID

Médium: article de revue
Langue(s): anglais
Publié dans: Fire and Materials, , n. 3, v. 48
Page(s): 299-310
DOI: 10.1002/fam.3184
Abstrait:

This study investigated the efficacy of the full transverse exhaust method for smoke extraction in tunnel fires. It examines factors such as the number and layout of air supply and exhaust outlets, analyzing their impact on smoke spread, tunnel temperature, visibility, and airflow. The results demonstrate that the full transverse exhaust method effectively controls smoke emissions in raised highway tunnels. It limits smoke spread, reduces tunnel temperature, and effectively controls the fire‐affected area. The number and layout of outlets significantly influence smoke dispersion, with fewer exhaust outlets providing better smoke control and optimizing the tunnel environment. However, insufficient outlets disrupt gas flow stability. The position of exhaust outlets affects smoke distribution, and caution is advised to prevent directing fresh air flow toward the fire. Opening an equal number of exhaust outlets on one side of the fire source yields superior smoke extraction results, reducing tunnel ceiling temperatures and minimizing risks to personnel and structures. Though stabilization may take longer, this configuration proves advantageous. The study offers valuable insights and practical guidelines for implementing the full transverse smoke control method in real‐world scenarios.

Structurae ne peut pas vous offrir cette publication en texte intégral pour l'instant. Le texte intégral est accessible chez l'éditeur. DOI: 10.1002/fam.3184.
  • Informations
    sur cette fiche
  • Reference-ID
    10777124
  • Publié(e) le:
    12.05.2024
  • Modifié(e) le:
    12.05.2024
 
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