For the circumstance of a subway's platform firing, this article established mathematical and physical model by using Two-layer zone simulation.
采用双层区域模拟，建立了某双层地铁车站火灾的数学物理模型。
Discusses several representative equations of point source plume. Establishes calculating equations of thermal stratification height, ventilation rate and neutral level based on a two-zone model.
讨论了几个典型的羽流流量计算公式，结合一种二区自然通风模型，建立了热分层高度、通风量和中和界高度的计算式。
Taking into account rock loosing zone, the two-medium model is adopted in the computation.
计算中采用考虑围岩松动圈的双介质模型，反演松动圈的弹性模量。
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