论文部分内容阅读
地下空间的利用主要集中在地下交通、地下商业、地下车库、地下娱乐场所以及城市防灾设施(如人防工程)等方面。本文针对地下建筑的火灾特点和原因,以某大学图书馆(半)地下室作为研究对象,采用流体动力学软件FDS进行场模拟,设置两个火灾场景,并设置五个测点,来研究不同时间不同区域的温度和能见度的变化过程,对该地下室烟气运动规律进行模拟分析研究。得到结论:采编编目室的可用安全疏散时间(ASET)为131s,各测点的温度在较短的时间内快速震荡上升,达到并超过人体可承受的安全阈值60℃,最终趋于一个较为稳定的值。
The use of underground space mainly in underground transportation, underground commerce, underground garage, underground entertainment and urban disaster prevention facilities (such as air defense projects) and so on. In this paper, according to the characteristics and causes of fire in underground buildings, a (semi-) basement of a university library is taken as the research object. Fluid dynamics software FDS is used for field simulation. Two fire scenarios are set up and five measuring points are set up to study the different time Different regions of the temperature and visibility changes in the process of the basement smoke movement simulation study. It was concluded that the available safety evacuation time (ASET) of cataloging cataloging room was 131s. The temperature of each measuring point increased rapidly and rapidly in a short period of time, reaching and exceeding the human body’s tolerable safety threshold of 60 ° C and eventually becoming more stable The value of.