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本文所叙述的研究论题是烟尘运动试验,研究通过控制火源周围的空气来控制烟尘的效果,以及确定为保护疏散地带免遭烟尘侵入的控制方法。达到这些目的需要4个步骤是:(1)建立描述烟尘水平运动、烟尘传播速度和热量损耗的数学模型;(2)数学模型与地下通道的足尺和比例模型的对比;(3)比较一个地下结构的比例模型中不同的通风系统和火源的位置;(4)利用单层区域模型模拟地下结构的烟尘运动。还提出一个用于评价地下结构的安全性的模拟模型。
The research topic described in this paper is the soot movement test, which studies the effect of controlling smoke by controlling the air surrounding the fire source and determining the control method for protecting the evacuation zone from the intrusion of smoke and dust. The four steps needed to achieve these goals are: (1) establish a mathematical model that describes the horizontal movement of soot, dust propagation speed, and heat loss; (2) compare the mathematical model with full-scale and ratiometric models of underground channels; (3) compare one Different ventilation systems and locations of fire sources in the scale model of the underground structure; (4) Using the single-layer area model to simulate the dust movement of the underground structure. A simulation model for evaluating the safety of underground structures was also proposed.