- 综合性科技类中文核心期刊
- 中国科技论文统计源期刊
- 中国科学引文数据库来源期刊
- 中国学术期刊文摘数据库（核心版）来源期刊
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| Citation: |
LI Junmei, LU Huimin, LI Yanfeng, OUYANG Li, KANG Siyan, GUO Zhicheng. Study on the Influence of Different Slope Compositions on Both Sides of the Change of Slope Point on the Fire Environment in the Herringbone Tunnel[J]. Journal of Beijing University of Technology, 2025, 51(3): 308-316. DOI: 10.11936/bjutxb2023080001
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To investigate the impact of different slope compositions on the fire environment in the tunnel with herringbone slope, the effects of different tunnel slope combinations and fire heat release rate on smoke spread and temperature distribution under natural ventilation were analyzed by the numerical method. Results show that when the slope of the small-slope side tunnel is 1%, the natural induced airflow speed and fire environment are significantly affected by the slope composition on both sides of the variable slope point, and the induced airflow speed is proportional to (Qw*H′*)0.113 6. When the slope of the small slope side tunnel is not less than 3%, the impact of the slope composition on both sides of the variable slope point can be negligible. Empirical equation for the maximum temperature rise in the herringbone tunnel is drawn, the maximum temperature rise in this kind of tunnel is much higher than that in the horizontal tunnel, and the safety of the tunnel ceiling above and close to the fire source should be concerned.
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