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 ›› 2020, Vol. 39 ›› Issue (4): 446-450.

• • 上一篇    下一篇

砂子粒径对流淌火蔓延及燃烧特性的影响

葛健伟1,张小翠2,马隽湫1,陈屹东1,李海航1   

  1. (1.中国计量大学 质量与安全工程学院,浙江 杭州310018;2.嘉兴市消防救援支队,浙江 嘉兴314000)
  • 收稿日期:2019-11-24 出版日期:2020-04-15 发布日期:2020-04-15
  • 通讯作者: 李海航(1986-),男,中国计量大学质量与安全工程学院讲师。
  • 作者简介:葛健伟(1995-),男,安徽合肥人,中国计量大学质量与安全工程学院硕士研究生,主要从事防火防爆技术和工业生产安全研究,浙江省杭州市下沙高教园区学源街258号,310018。
  • 基金资助:
    浙江省基础公益研究计划项目(LQ19E040005);浙江省重点研发计划项目(2018C03029)

Effect of sand size on the spread and burning characteristics of spill fire

GE Jian-wei1, ZHANG Xiao-cui2 , MA Jun-qiu1,CHEN Yi-dong1, LI Hai-hang1   

  1. (1.College of Quality and Safety Engineering, China Jiliang University, Zhejiang Hangzhou 310018, China; 2.Jiaxing Fire and Rescue Detachment, Zhejiang Hangzhou 314000, China)
  • Received:2019-11-24 Online:2020-04-15 Published:2020-04-15

摘要: 为探究砂子粒径对流淌火的影响,设计并搭建了流淌火试验平台,试验研究砂子粒径和泄漏速率对流淌火燃烧特性的影响。结果表明:不同粒径砂子流淌火有明显的燃烧阶段性特征,砂子粒径较粗时燃烧过程有蔓延阶段、收缩阶段、稳定阶段、维持阶段和熄灭阶段5个阶段,而砂子粒径较细时没有收缩阶段。稳定燃烧面积随着泄漏速率和砂子粒径的增大而增大,但稳定燃烧速率随着砂子粒径的增大而减小。不同泄漏速率流淌火的平均稳定线燃烧速率约为0.122 mm/s。

关键词: 砂子粒径, 流淌火, 燃烧面积, 燃烧速率

Abstract: In order to explore the impact of sand on spill fire accident, the experimental platform of spill fire was designed and constructed, and the sand size effect and leakage rate on the burning characteristics of spill fire was studied. The results showed that the burning phase characteristics of spill fire of different sand size were obvious;when the sand particle size is crude, the burning process has five stages: spreading, shrinking, steady, maintenance, and extinguishing; while the sand particle size is fine, there is no shrinking phase.The steady burning area increase with the increase of the sand size. The steady burning rate decreased with the increase of sand size. The average steady line burning rate of spill fire at different leakage rates was about 0.122 mm/s.

Key words: sand size, spill fire, burning area, burning rate