| 摘要: |
| 森林中的细小可燃物是引发森林火灾的关键因素。文章选用广东省 5 种典型常绿阔叶林树种的枯枝和枯叶共 10 种样品，通过元素成分分析、工业分析和热重分析研究了细小可燃物的燃料特性和燃烧特性，计算了每种样品的着火温度，并引入着火温度和可燃性指数两种可燃性指标对各样品的可燃性进行量化。实验结果表明：马尾松 Pinus massoniana 叶具有最高的挥发分含量，杧果叶的挥发分含量最低；杧果 Mangifera indica 枝的着火温度最低，枫香 Liquidambar formosana 枝的着火温度最高。在细小可燃物的燃烧过程中，挥发分的燃烧比焦的燃烧更加剧烈，反应速率更快。综合燃烧难易程度和剧烈程度， 可燃性排序为杧果叶 <香樟枝 <枫香叶 <枫香枝 <杧果枝 <香樟叶 <马尾松叶 <洋紫荆叶 <马尾松枝 <洋紫荆枝。 |
| 关键词: 森林可燃物 热重分析 燃料特性 燃烧特性 |
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| 基金项目:云浮市科技计划项目（2020020301） |
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| Combustion Characteristic of Fine Combustibles in 10 Typical Evergreen Broad-leaved Forests in Guangdong Province |
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WangLupeng, MaYun, LuoMinjun, LiangAn, SuZhirong, LanTian
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Yunfu Fire and Rescue Detachment
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| Abstract: |
| Small combustibles in forests are the key factors causing forest ?res. In this paper, ten samples of dead branches and leaves of five typical evergreen broad-leaved forest species in Guangdong Province were selected. The fuel characteristics and combustion characteristics of fine fuels were studied by elemental composition analysis, proximate analysis and thermogravimetric analysis. The ignition temperature of each sample was calculated, and two flammability indexes, ignition temperature and flammability index, were introduced to quantify the ?ammability of each sample. The results showed that Pinus massoniana leaves had the highest volatile content, while Mangifera indica leaves had the lowest volatile content. M. indica branches had the lowest ignition temperature. Liquidambar formosana branches have the highest ignition temperature. In the combustion process of small combustibles, the combustion of volatiles is more intense and the reaction rate is faster than that of coke. Considering the dif?culty and severity of combustion, the ?ammability is ranked as M. indica leaves
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| Key words: forest combustibles thermogravimetric analysis fuel characteristics combustion characteristics |
