滇西南地区典型森林可燃物燃烧特性实验研究  

Experimental Study on the Combustion Characteristics of Typical Forest Fuels in the Southwest Area of Yunnan Province

作　　者：文刚 周仿荣 马仪 潘浩 郭宇宁 WEN Gang;ZHOU Fangrong;MA Yi;PAN Hao;GUO Yuning(Electric Power Research Institute of Yunnan Power Grid Co.,Ltd.,Kunming 650217,China;不详)

机构地区：[1]云南电网有限责任公司电力科学研究院,昆明650217 [2]中国科学技术大学火灾科学国家重点实验室,合肥230027

出　　处：《武汉理工大学学报(信息与管理工程版)》2024年第6期871-877,共7页Journal of Wuhan University of Technology:Information & Management Engineering

基　　金：云南省重大科技专项项目(202202AD080010);十四五国家重点研发计划资助项目(2021YFC3000300)。

摘　　要：森林可燃物是山火发生和蔓延的关键驱动因素,研究其燃烧特性对山火防治至关重要。以滇西南地区典型森林枯落物为研究对象,根据下垫面类型及地理位置设置8个采样点进行分类采样,测定其燃烧性能指标值,分析燃烧特性差异。结果表明:8个采样点的燃点、热值无明显差异,但平衡含水率、热释放速率和时滞存在显著差异;针对各指标的最高值,下垫面类型为竹林的可燃物燃点最高,为296.6℃,下垫面类型为咖啡园的可燃物热值最大,为20.6 kJ/g;下垫面类型为茶园的可燃物平衡含水率最高,达28.6%;下垫面类型为森林的可燃物平均热释放速率最大。相比景洪地区,普洱地区的可燃物平衡含水率较高、失水速度较慢,热释放速率较小。Forest combustibles are the key drivers of wildfire occurrence and spread,and studying their combustion characteristics is crucial for effective wildfire prevention and control.Based on this,this article took the typical forest litter in the southwest area of Yunnan Province as the research object,and set up 8 sampling points according to the type of underlying surface and geographical location for classified sampling,measured their combustion performance indicators,and analyzed the differences in combustion characteristics.The results showed that there is no significant difference in the ignition points and calorific values of the 8 sampling points,but there are significant differences in equilibrium moisture content,heat release rate,and lag time.For the maximum values of various indicators,the ignition point of combustibles with a bamboo forest as the underlying surface type is the highest,at 296.6℃.The calorific value of combustibles with a coffee plantation as the underlying surface type is the largest,at 20.6 kJ/g.The equilibrium moisture content of combustibles with a tea garden as the underlying surface type is the highest,reaching 28.6%.The average heat release rate of combustibles with a forest as the underlying surface type is the greatest.Compared to the Jinghong area,the equilibrium moisture content of combustibles in the Pu′er area is higher,the rate of moisture loss is slower,and the heat release rate is smaller.

关 键 词：枯落物 燃点 热值 热释放速率 平衡含水率 

分 类 号：X954[环境科学与工程—安全科学]