细水雾抑制矿井倾斜巷道火灾数值模拟研究
Numerical simulation study on suppression of inclined mine roadway fire disaster by fine water mist
李瑞卿 1刘彦青 1郑义 1彭然 1王长禄 1赵尤信1
作者信息
- 1. 煤科通安(北京)智控科技有限公司,北京 100013;煤炭科学技术研究院有限公司矿山智能通风事业部,北京 100013;北京市煤矿安全工程技术研究中心,北京 100013
- 折叠
摘要
为探究倾斜巷道内外因火灾时矿井巷道火灾烟气分布规律,针对矿井火灾期间高温有毒烟气严重威胁井下人员避灾和救援工作等问题,采用Fluent数值模拟软件,构建1:1倾斜巷道模型,通过添加细水雾系统,对7种坡度、2种火源功率下倾斜巷道的烟气运动和温度变化进行研究.研究结果表明,无细水雾的倾斜巷道工况下,下游顶板温度随着巷道坡度的增大而不断升高,在巷道坡度为20°时最高温度达到了265 ℃;添加细水雾的倾斜巷道工况下,下游顶板温度随着巷道坡度的增大而不断降低,随着坡度的增大,细水雾的降温效果更加明显.
Abstract
In order to explore the distribution pattern of smoke in mine roadway fire disasters caused by internal and external factors in inclined roadways,and to address the serious threat of high-temperature toxic smoke to underground personnel's disaster avoidance and rescue work during mine fires,the Fluent numerical simulation was used to construct a 1:1 inclined roadway model.By adding a fine water mist system,the smoke movement and temperature changes in inclined roadways under 7 slopes and 2 fire source powers were studied.The results showed that under the condition of inclined roadway without fine water mist,the downstream roof temperature contin-uously increases with the increase of roadway slope,and the highest temperature reaches 265 ℃ when the roadway slope is 20°.The in-clined roadway condition with the addition of fine water mist results in a continuous decrease in downstream roof temperature with the increase of roadway slope.As the slope increases,the cooling effect of fine water mist becomes more pronounced.
关键词
细水雾/顶板温度/烟气/倾斜巷道/数值模拟Key words
fine water mist/roof temperature/smoke/inclined roadway/numerical simulation引用本文复制引用
基金项目
天地科技股份有限公司科技创新创业资金专项面上项目(2024-TD-MS002)
出版年
2024
NETL
NSTL
万方数据