CAJ | 학술논문

利用数值模拟技术和pyrosim软件，对火灾功率为20 MW的中型规模隧道火灾进行了仿真，通过对火灾烟流蔓延模拟结果的分析，得出了该火灾规模的临界风速，并在临界风速下，通过对隧道内的温度、CO浓度的分布进行了数值模拟分析，得出了其分布规律。然后以修正后的克拉尼公式及FED窒息模型作为火灾时人员逃生的判定条件，综合考虑了火灾时隧道各断面温度和CO浓度分别与人员极限忍受时间的关系，最后得出隧道火灾时人员的安全逃生方向及火源下游人员的最大安全逃生时间和最远逃生区域。
이용수치모의기술화pyrosim연건，대화재공솔위20 MW적중형규모수도화재진행료방진，통과대화재연류만연모의결과적분석，득출료해화재규모적림계풍속，병재림계풍속하，통과대수도내적온도、CO농도적분포진행료수치모의분석，득출료기분포규률。연후이수정후적극랍니공식급FED질식모형작위화재시인원도생적판정조건，종합고필료화재시수도각단면온도화CO농도분별여인원겁한인수시간적관계，최후득출수도화재시인원적안전도생방향급화원하유인원적최대안전도생시간화최원도생구역。
In this paper, using the numerical simulation technology, and using pyrosim software for tunnel medium scale fire simulation whose power is 20MW, by analysising of the simulation results of the spread of ifre smoke lfow, then draw the critical wind speed of this ifre , and under the critical wind speed, analysis of the numerical simulation on temperature, CO concentration distribution, and come to their distribution. Then with the modiifed formula, FED Suffocation model to escape discrimination condition, considering the temperature and CO concentration under the common action of personnel endure limit time relationship,ifnally draw the safety of the personnel escape direction and the maximum security escape time and the fasthset escape area at different locations of the ifre origin downstream after tunnel ifre.