1. Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing 100084, China 2. Beijing Key Laboratory of City Integrated Emergency Response Science, Tsinghua University, Beijing 100084, China 3. Guangzhou Metro Group Co., Ltd., Guangzhou 510330, China
Smoke diffusion caused by the stack effect and the blocking effect in a sloped tunnel was investigated in a full-scale fire experiment under a stationary vehicle on an urban rail transit line. The ventilation mode and the vehicle blocking were varied to study the effects of the airflow velocity, the vertical distribution of the smoke temperature, the smoke layer distribution and the smoke spread time. The results show that the ventilation mode and the vehicle blocking both change the flow field near the fire which in turn influences the airflow velocity, smoke distribution and smoke spread time. A smoke spread velocity model was then used to further study the smoke diffusion for various vehicle blocking conditions. The conclusions can guide smoke control design and personnel evacuation plans for such tunnel fire scenarios.
杨宇轩,刘畅,仇培云,龙增,钟茂华. 含坡度隧道车辆阻塞下全尺寸火灾实验[J]. 清华大学学报（自然科学版）, 2020, 60(12): 1030-1038.
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