Study on the Influence of Altitude on Smoke Propagation Law in Mine Roadway Fire
Received date: 2019-10-05
Revised date: 2020-01-17
Online published: 2020-05-07
In the process of mine safety production,frequent mine fire accidents have caused huge casualties and economic losses,which has become one of the major concerns.The environment conditions of mines at different altitudes are completely different,which directly affects the evolution of the mine fire,and brings great challenges to the emergency rescue work during the mine fire.Therefore,it is of great practical significance to study the effect of altitude on the law of smoke spread during the mine roadway fire period.In this paper,based on the construction of the mine fire model,the key paramaters of the fire smoke at the characteristic height of the human eye (z=1.6 m) were used as the focus,fire scenarios of the mine mechanical and electrical chamber at five groups of different altitudes from 0 m to 4 000 m(equal points) was simulated by using the Fire Dynamics Simulator(FDS).By observing the process of smoke diffusion and dynamic temperature rise in different fire scenarios,the law of smoke diffusion and temperature distribution in mine roadway at different altitudes was analyzed.At the same time,the changes of temperature,smoke behavior(CO concentration),visibility and other fire smoke characteristic parameters in the mine fire at different altitudes were compared,so as to analyze the influence of altitude on the safety evacuation of underground personnel during mine fires.The results show that:(1)With the increase of altitude,the rate of smoke spread and the influence range of smoke in the mine fire are correspondingly reduced.In the transverse diction,the effective and safe evacuation route should be far away from the fire side in the tunnel;(2)With the increase of altitude,the characteristic parameters of fire smoke also change to some extent,that is the peak temperature and CO concentration decrease,while the visibility gradually increases;(3)Compared with low-altitude areas,when the fire occurs in the mine with relatively high altitude,the safety evacuation time is prolonged and the safety evacuation distance is shortened,which makes the possibility of people’s safety escape is greater.In general,this paper reveals the mechanism of the effect of altitude on the smoke spread of mine fire,which can be used as reference for the prevention and control of mine fire accidents.
Rui HUANG , E WU , Lin WU . Study on the Influence of Altitude on Smoke Propagation Law in Mine Roadway Fire[J]. Gold Science and Technology, 2020 , 28(2) : 293 -300 . DOI: 10.11872/j.issn.1005-2518.2020.02.165
1 |
杨彪.高寒高海拔地区矿山工程设计要点思考[J].中国钼业,2018,42(3):11-16.
|
2 |
张念,谭忠盛,毛军,等.高海拔铁路隧道火灾燃烧特性试验研究[J].中国安全科学学报,2011,21(12):52-57.
|
3 |
洪洋,周科平,梁志鹏,等.基于VR技术的非煤矿山火灾应急培训系统的开发[J].黄金科学技术,2019,27(4):629-636.
|
4 |
徐乐奕.辽宁连山钼业集团兴利矿业有限公司“12·17”重大火灾事故[J].现代班组,2018(11):29.
Xu Leyi.“12·17” major fire accident in Liaoning Lianshan Molybdenum Group Xingli Mining Co.,Ltd.[J].Modern Group,2018(11):29.
|
5 |
|
6 |
|
7 |
|
8 |
于春雨,张永明,方俊,等.西藏高原环境下点式感烟火灾探测器的灵敏度[J].中国科学技术大学学报,2007,37(3):290-295.
|
9 |
|
10 |
|
11 |
|
12 |
|
13 |
|
14 |
|
15 |
张念,谭忠盛.高海拔特长铁路隧道火灾烟气分布特性数值模拟研究[J].中国安全科学学报,2013,23(6):52-57.
|
16 |
袁建平,方正,黄海峰,等.水平隧道火灾通风纵向临界风速模型[J].土木建筑与环境工程,2009,31(6):66-70.
|
17 |
|
18 |
|
19 |
苟红松,李永生,罗占夫.高海拔地区隧道施工通风风量计算及风机选型研究[J].隧道建设,2012,32(1):53-56.
|
20 |
何磊.高原矿山独头巷道增氧通风数值模拟研究[J].现代矿业,2011,27(2):37-40.
|
21 |
王光福.高原寒区对工程机械性能的技术研究与应用[J].甘肃科技,2009,25(10):44-45,71.
|
22 |
于润沧.采矿工程师手册(下)[M].北京:冶金工业出版社,2009:1879-1890.
|
23 |
|
24 |
|
25 |
王晓波.长大隧道火灾安全疏散研究[J].地下空间与工程学报,2016,12(5):1364-1370.
|
/
〈 |
|
〉 |