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 ›› 2023, Vol. 42 ›› Issue (4): 568-572.

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辽中地区8种乔木的三维燃烧性研究

杨晗伟1,2，徐艳英1,2，王 志1,2，李忠昊1,2   

  1. （1. 沈阳航空航天大学 安全工程学院，辽宁 沈阳 110136；2.沈阳航空航天大学 辽宁省飞机火爆防控及可靠性适航技术重点实验室，辽宁 沈阳 110136）
  • 出版日期:2023-04-15 发布日期:2023-04-15
  • 作者简介:杨晗伟（1996- ），男，沈阳航空航天大学安全工程学院研究生，主要从事火灾科学与飞机火爆防控研究，辽宁省沈阳市沈北新区道义南大街37号，110136。

Three-dimensional combustibility study of eight tree species in central Liaoning

Yang Hanwei1,2, Xu Yanying1,2, Wang Zhi1,2, Li Zhonghao1,2   

  1. (1. School of Safety Engineering, Shenyang Aerospace University, Liaoning Shenyang 110136, China; 2. Liaoning Key Laboratory of Aircraft Safety and Airworthiness, Shenyang Aerospace University, Liaoning Shenyang 110136, China)
  • Online:2023-04-15 Published:2023-04-15

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摘要： 选择辽中地区典型的8种乔木树种叶片和小枝作为研究对象，利用电热鼓风干燥箱和锥形量热仪对影响燃烧性的11项指标进行测定，从点燃性、剧烈性和持续性3个特征维度将指标分类，并运用灰色关联分析法进行三维燃烧性评价。结果表明，8种乔木叶片、小枝可燃物的失水效率随加热时间不断增大，叶片引燃所需热量远大于小枝，针叶树种熄灭含水率较大，叶片比小枝更易燃。8种乔木的剧烈性与持续性呈正相关，点燃性与剧烈性的关联性较弱，油松、白桦、蒙古栎、华山松、毛白杨、白蜡、黄栌、银杏综合燃烧性依次减弱。

关键词: 乔木树种, 燃烧性, 失水效率, 熄灭含水率, 灰色关联分析

Abstract: In this paper, the leaves and twigs of eight typical tree species in central Liaoning were selected as the research objects. The electric blast drying oven and cone calorimeter were used to measure 11 indexes affecting their combustibility. The indexes were classified from three characteristic dimensions of ignitability, intensity and persistence, and the three-dimensional combustibility evaluation was carried out by grey correlation analysis. The results showed that the water loss efficiency of the combustible materials of leaves and twigs increased with the heating time. The heat required for igniting leaves was much greater than that of twigs. The moisture content of coniferous species was larger, and the leaves were more flammable than twigs. The intensity and persistence of the eight trees were positively correlated, and the correlation between ignitability and intensity was weak. The comprehensive combustion activity of Pinus tabulaeformis, Betula betula, Quercus mongolica, Pinus huasanensis, Cottonwood, Ash, Cotinus and Ginkgo was weakened successively.

Key words: tree species, combustibility, water loss efficiency, extinguish moisture content, grey correlation analysis