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.

中文翻译：

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送风排烟对公路长隧道全横排烟影响研究

本研究调查了全横向排气法在隧道火灾中排烟的效果。它检查了送风口和排气口的数量和布局等因素，分析了它们对烟雾扩散、隧道温度、能见度和气流的影响。结果表明，全横向排气方法可以有效控制高架公路隧道的烟气排放。它限制了烟雾蔓延，降低了隧道温度，有效控制了火灾影响区域。排气口的数量和布局显着影响烟雾的扩散，较少的排气口可以更好地控制烟雾并优化隧道环境。然而，出口不足会破坏气流稳定性。排气口的位置会影响烟雾分布，建议小心防止新鲜空气流向火场。在火源一侧打开相同数量的排气口可产生出色的排烟效果，降低隧道天花板温度并最大限度地减少对人员和建筑物的风险。尽管稳定可能需要更长的时间，但这种配置证明是有利的。该研究为在现实场景中实施全面横向烟雾控制方法提供了宝贵的见解和实用指南。