当前位置: 首页 > 文章 > 云南松林细小可燃物层燃烧初始蔓延速度的初步研究 浙江林业科技 2009,29 (1) 54-57
Position: Home > Articles > Initial Spreading Speed of Fine Fuel Fire at Pinus yunnanensis Stand Journal of Zhejiang Forestry Science and Technology 2009,29 (1) 54-57

云南松林细小可燃物层燃烧初始蔓延速度的初步研究

作  者:
李世友;MA Ai-li;马爱丽;刘会龙;杨清;张凯;张桥蓉
单  位:
西南林学院保护生物学学院
关键词:
云南松;细小可燃物;载量;燃烧床;初始蔓延速度
摘  要:
为研究云南松林细小可燃物含水率、载量对燃烧初始蔓延速度的影响,用自行设计的燃烧床对不同含水率的可燃物进行了7次燃烧试验,通过分析试验过程中各测定的温度变化曲线,提出了可燃物层燃烧初始蔓延速度的计算方法,即试验台水平方向上两热电偶的距离除以两热电偶测到最高温的时间差,计算和分析表明,云南松林细小可燃物层燃烧的初始蔓延速度随可燃物含水率的增加而下降,可燃物的载量对初始蔓延速度影响不大,含水率为7.64%的云南松林细小可燃物的初始蔓延速度为0.020 0~0.023 1 m/s,平均为0.021 6 m/s,该速度接近云南松林细小可燃物层在森林防火期的最大初始蔓延速度。
译  名:
Initial Spreading Speed of Fine Fuel Fire at Pinus yunnanensis Stand
作  者:
LI Shi-you1,2,MA Ai-li1,LIU Hui-long1,YANG Qing1,ZHANG Kai1,ZHANG Qiao-rong1(1.Faculty of Conservation Biology,Southwest Forestry University,Kunming 650224,China;2.Key Laboratory of Forest Disaster Warning and Control in Yunnan Higher Education Institutions,Kunming 650224,China)
关键词:
Pinus yunnanensis;fine fuel;load;combustion bed;initial fire spreading speed
摘  要:
Combustion experiment on effect of moisture content and load of fine fuel at Pinus yunnanensis stand on initial spreading speed was carried out with specially designed experimental equipment.Calculation method of initial fire spreading speed was proposed based on temperature curves at experimental course,namely the distance between two thermocouples divided by interval of the highest temperature measured by the two thermocouples.The result showed that initial fire spreading speed of fine fuel decreased with increase of moisture content,fuel load had little effect on initial fire spreading speed.Initial fire spreading speed of fine fuel with 7.64% of moisture content was 0.020 0 ~ 0.023 1 m/s,averaged by 0.021 6 m/s,which was the maximum initial fire spreading speed of fine fuel of P.yunnanensis forest at fire season.

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