摘要
针对矿井封闭火区内瓦斯爆炸特性问题,通过FLACS软件建立简单的密闭空间,模拟了瓦斯爆炸传播中的压力、温度和火焰的发展变化过程。结果表明:压力波的反射作用导致瓦斯爆炸压力曲线反复波动,出现多个压力峰值;各点温度在距离燃料区较近区域波动幅度小,在稍远的距离波动幅度大,而在距末端较近的距离,温度值较前面的监测点而言值非常小;火焰会出现反向传播的现象,之后出现湍流现象,直至反应结束。
According to the problem of gas explosion characteristics in mine closed fire zone,FLACS software is used to establish a simple closed space to simulate pressure changes,temperature changes and flame development during gas explosion.The results show that the reflection of pressure wave causes the gas explosion pressure curve to fluctuate repeatedly,and multiple pressure peaks appear;the temperature fluctuates less in the vicinity of the fuel zone,and the fluctuation range is larger in the slightly distant position.While at a distance closer to the end,the temperature value is very small compared to the previous monitoring point;the flame has a reverse propagation phenomenon,followed by turbulence until the end of the reaction.
作者
罗振敏
吴刚
LUO Zhenmin;WU Gang(School of Safety Technology and Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;Key Laboratory of Western Mine Exploitation and Disaster Prevention and Control of the Ministry of Education,Xi’an 710054,China;The Western Coal Mine Safety Engineering Research Center of the Ministry of Education,Xi’an 710054,China)
出处
《煤矿安全》
CAS
北大核心
2020年第2期1-4,共4页
Safety in Coal Mines
基金
国家自然科学基金资助项目(51674193)
陕西省自然科学基础研究计划面上资助项目(2017JM5068)
陕西省科技厅自然基础研究计划资助项目(2018JM5152).
关键词
瓦斯爆炸
密闭空间
反复波动
火焰形态
湍流
gas explosion
confined space
repeated fluctuations
flame morphology
turbulence
