【摘要】：介紹燒毀嚴(yán)重程度認(rèn)定法、煙熏痕跡認(rèn)定法等起火點(diǎn)的認(rèn)定方法。以燒毀嚴(yán)重程度判別起火部位或起火點(diǎn)受火災(zāi)荷載的干擾,其科學(xué)性與準(zhǔn)確度受到質(zhì)疑。電鏡能譜認(rèn)定起火點(diǎn)的方法基于起火點(diǎn)受熱時(shí)間最長(zhǎng),在同類別灰燼中的碳含量最低的原理。以粉碎的A4打印紙充當(dāng)可燃物設(shè)計(jì)實(shí)驗(yàn),利用電鏡能譜儀辨識(shí)灰燼類別,測(cè)定碳含量,確定火災(zāi)蔓延方向及起火點(diǎn),驗(yàn)證電鏡能譜認(rèn)定法的可行性。結(jié)果表明,灰燼樣本在經(jīng)實(shí)驗(yàn)室電爐600℃灼燒2h后仍能夠檢測(cè)出≥2%的碳元素;選擇能譜面分析誤差較小;檢測(cè)點(diǎn)的灰燼必須是相同類別的灰燼。介紹電鏡能譜儀認(rèn)定起火點(diǎn)的步驟。
[Abstract]:This paper introduces the identification methods of fire point, such as the identification method of burning severity and the identification method of smoke trace. According to the severity of the fire, the scientific nature and accuracy of distinguishing the fire site or the fire point from the interference of the fire load are questioned. The method of determining the ignition point by electron microscope energy spectrum is based on the principle that the ignition point is heated for the longest time and the carbon content in the same kind of ash is the lowest. The comminuted A4 printing paper was used as combustible material design experiment. The ash category was identified by electron microscope energy dispersive spectrometer, the carbon content was determined, the fire spread direction and fire point were determined, and the feasibility of electron microscope energy spectrum identification method was verified. The results show that the ash sample can still detect more than 2% carbon after burning at 600 鈩，

本文編號(hào)：2522245