基于FDS的细水雾抑制熄灭带式输送机火灾研究  

Research on suppression and extinguishment of belt conveyor fire by water mist based on FDS

作　　者：李贺 沈先华 田丽 路洁心 鲁义 曾钢 LI He;SHEN Xianhua;TIAN Li;LU Jiexin;LU Yi;ZENG Gang(School of Resource&Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Motian Coal Mine,Xiang Coal Baishanping Mining Co.,Ltd.,Hengyang 421800,China)

机构地区：[1]湖南科技大学资源环境与安全工程学院,湖南湘潭411201 [2]湘煤集团白山坪矿业有限公司磨田煤矿,湖南衡阳421800

出　　处：《煤矿安全》2023年第9期53-59,共7页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(52274195,51904103);湖南省自然科学基金资助项目(2022JJ20024,2021JJ30254);湖南省教育厅科学研究资助项目(21B0465)。

摘　　要：为了探讨细水雾系统参数对于扑灭带式输送机火灾的影响机理,利用FDS研究了细水雾的降温特性及不同参数条件下细水雾扑灭带式输送机火灾的灭火效果;从雾滴粒径、喷雾流量、喷头间距的角度出发,对比分析了在细水雾作用下巷道内温度变化及灭火时间等情况。结果表明:细水雾灭火效果受系统参数影响显著;在一定范围内,灭火时间随着雾滴粒径的增加而减小,随着喷雾流量的增加而减少;相同雾滴粒径与喷雾流量下,灭火时间随着喷头间距的增加而变大;粒径为100μm,喷嘴流量为8 L/min,喷头间距为1 m的细水雾能够快速降低火场温度,有效抑制火灾发展。For exploring the influence mechanism of fine water mist system parameters on extinguishing mine belt fires,FDS was used to study the cooling characteristics and the fire extinguishing effect of fine water mist under different parameters.From the perspective of particle diameter,spray flow and nozzle spacing,the temperature change and fire extinguishing time in the roadway under fine water mist are compared and analyzed.The results show that the fire extinguishing effect is significantly affected by the system parameters.In a certain range,the fire extinguishing time decreases with the droplet particle size and decreases with the spray flow.Under the same droplet particle size and spray flow rate,the fire extinguishing time becomes larger with the increase of the nozzle spacing.Fine water mist with particle size of 100 m,nozzle flow of 8 L/min,and nozzle spacing of 1 m can quickly reduce the temperature of the fire field and effectively inhibit the spread of fire.

关 键 词：细水雾 粒径 流量 喷头间距 灭火效果 

分 类 号：TD752.2[矿业工程—矿井通风与安全]