主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2025, Vol. 44 ›› Issue (2): 196-201.

• • 上一篇    下一篇

环境温度对森林腐殖质阴燃特性的影响探究

王睿琛1, 杨玖玲2, 王皓良2, 胡玉琦3   

  1. （1.西南交通大学 交通运输与物流学院，四川 成都 611756； 2.四川师范大学 工学院，四川 成都 610101；3.应急管理部四川消防研究所，四川 成都 610036）
  • 收稿日期:2024-10-11 修回日期:2024-10-16 出版日期:2025-02-15 发布日期:2025-02-15
  • 作者简介:王睿琛，西南交通大学交通运输与物流学院硕士研究生，主要从事阴燃森林火灾燃烧特性方面的研究，四川省成都市郫都区，610036。
  • 基金资助:
    国家自然科学基金资助项目（52106184，52306158）；四川省自然科学基金资助项目（2023NSFSC0189）；应急管理部四川消防研究所基本科研业务费项目（Z20238801，20248811Z）

Experimental study on the effect of ambient temperature on the smoldering characteristics of forest duff

Wang Ruichen1, Yang Jiuling2, Wang Haoliang2, Hu Yuqi3   

  1. (1. School of Transportation and Logistics, Southwest Jiaotong University, Chengdu Sichuan 611756, China; 2. School of Engineering, Sichuan Normal University, Chengdu Sichuan 610101, China; 3. Sichuan Fire Science and Technology Research Institute of MEM, Chengdu Sichuan 610036, China)
  • Received:2024-10-11 Revised:2024-10-16 Online:2025-02-15 Published:2025-02-15

摘要： 本文对不同环境温度下的腐殖质阴燃特性进行研究，以期为地下火防治提供科学依据。控制阴燃环境温度分别为15、25、35 ℃，试验获得不同工况下腐殖质阴燃的质量损失速率、蔓延速率、CO2和CO质量通量，探究环境温度对阴燃的影响。根据质量损失速率将腐殖质阴燃分为点火、增长和衰减三个阶段。35 ℃环境温度下腐殖质阴燃质量损失速率峰值相较15 ℃增长26.01%~29.63%。15 ℃温度下，距表面4 cm深度处的阴燃峰值温度最低，表层蔓延速度最慢，增长阶段气体排放峰值最低。15~35 ℃温度范围内，阴燃腐殖质的质量损失速率峰值随温度增加而上升，不同温度增长阶段平均质量损失速率无显著差异；增长阶段CO2质量通量峰值随温度增加而上升，平均质量通量随温度增加而下降，不同温度增长阶段CO2平均质量通量无显著差异。

关键词: 阴燃林火, 环境温度, 蔓延速率, 阴燃排放

Abstract: This paper investigates the smoldering of humus under different ambient temperatures to provide a scientific basis for mitigating smoldering forest fires. An experimental facility was used to conduct the fire experiments under controlled environments with temperatures stabilizing at 15, 25, 35 ℃. The mass loss rate, spread rate and mass flux of CO and CO2 were obtained and analyzed to explore the impact of ambient temperature on smoldering combustion and emissions. The experimental results showed that the smoldering of humus could be divided into three stages based on the mass loss rate: ignition, growth, and decay. Compared to 15 ℃, the peak mass loss rate of smoldering humus from an ambient temperature of 35 ℃ increased by 26.01%~29.63%. At 15 ℃, the peak smoldering temperature within 4 cm of the surface and the surface spread rate remained the slowest; the peak gas emission during the growth stage was the lowest. Within the temperature range of 15~35 ℃, the peak mass loss rate of smoldering humus increased with temperature, while there was no significant difference in the average mass loss rate during the growth stage across different temperatures. The peak CO2 mass flux during the growth stage increased with temperature, but the average mass flux decreased with temperature, no significant difference in the average CO2 mass flux during the growth stage was found across different temperatures.

Key words: smoldering forest fire, ambient temperature, spread rate, smoldering emission