It is necessary to simulate fire smokes of underground buildings with large space by computers due to existing procedures to fire smokes protections of undergrounds have many shortcomings.

• 鉴于现有的防火设计规范对地下建筑防排烟的规定存在着许多不足之处，有必要对地下大空间建筑进行火灾烟气运移规律的模拟研究。