【摘要】 地下疏散楼梯间是地下室人员疏散的重要通道，为了保证疏散的安全性，地下3层防烟楼梯间及其前室是不是都要采用机械加压送风。在保证建筑消防安全和功能性的前提下，以一个设计实例提出前室采用加压送风，楼梯间是可以采用自然通风的。更多还原

【Abstract】 The underground evacuation stairwell is an important passage for evacuation in the basement. In order to ensure the safety of evacuation, Whether the underground three–story smoke–proof staircase and its front room should all adopt mechanical pressurization ventilation? Under the premise of ensuring building fire safety and functionality, the front room adopting pressurized air supply, and the stairwell adopting natural ventilation are feasible.更多还原