CAJ | 학술논문

室内发生火灾时,经常遇到一处首先着火,然后和火源间隔一定距离的可燃物也开始着火的现象.以木材为例,通过小规模火灾实验,测量不同环境条件下和火源间隔一定距离的木材发生着火燃烧时的烟气层温度,研究了室内火灾中高温烟气层对非连续介质着火的影响.研究表明,高温烟气层温度达到非连续介质的自燃点是其着火的必要条件,高温烟气层在非连续介质着火过程中起到了＂点火源＂的作用.因此,可以通过阻止烟气层温度达到非连续介质的自燃点或避免非连续介质可燃挥发份和高温烟气层相接触等措施防止室内火灾时非连续介质着火,从而防止火灾的蔓延扩大.
실내발생화재시,경상우도일처수선착화,연후화화원간격일정거리적가연물야개시착화적현상.이목재위례,통과소규모화재실험,측량불동배경조건하화화원간격일정거리적목재발생착화연소시적연기층온도,연구료실내화재중고온연기층대비련속개질착화적영향.연구표명,고온연기층온도체도비련속개질적자연점시기착화적필요조건,고온연기층재비련속개질착화과정중기도료＂점화원＂적작용.인차,가이통과조지연기층온도체도비련속개질적자연점혹피면비련속개질가연휘발빈화고온연기층상접촉등조시방지실내화재시비련속개질착화,종이방지화재적만연확대.
When indoor fire happened,it is often occurred that a local fire first appears in a place,then the combustibles spaced certain distance with the occurred fire will be ignited and begin to burn.As an example,the smoke temperature was measured when the wood keeping a certain distance away from the ignition source caught fire in different environments,and the influence of the hot smoke layer on the discrete objects ignition was studied through small scale fire experiments.The results show that the smoke temperature reaching the self-ignition point of the discrete objects is a qua non of their ignition,and the hot smoke layer plays an important role as an ignition source when the discrete objects catch fire.So,the measures such as stopping the smoke layer temperature reaching the self-ignition point of the discrete objects or avoiding the combustible volatiles of the discrete objects contacting with the hot smoke layer can be adopted to prevent the discrete objects ignition in enclosure fires,and therefore to prevent the spreads of the fires.