The smoke will cause much damage to people when a fire breaks in an underground building. This paper explores the law of the smoke flowing, evacuating measures and smoke ventilation.

• 地下建筑发生火灾时,烟气对人员的危害十分巨大。对地下建筑烟气流动规律、人员的安全疏散及其防排烟措施进行了探讨。