摘要
对褐煤煤层瓦斯爆炸诱发火灾进行了热力着火分析,分析了爆炸的危害性,从热力着火的角度进行了数学模型推导,得出瓦斯爆炸引发次生火灾的热力着火条件:瓦斯爆炸后短期内的动态特殊热环境温度高于可燃物临界着火温度,就有可能引发次生火灾。结合爆炸后特殊热环境下褐煤析出产物的着火条件和热力着火条件进行了着火分析:只要褐煤煤层瓦斯爆炸的初始瓦斯浓度和体积满足爆炸后的可燃物着火三要素,就会产生爆炸引发热力着火的现象。
The paper had an analysis on the thermal firing for the fire disaster occurred by lignite seam gas explosion and analyzed the danger of the explosion. From the thermal fire view, a mathematics model was derived and the thermal fire conditions of the secondary fire disaster occurred by the gas explosion were obtained. Within a short period after the gas explosion occurred, the dynamic special heat environment temperature would be higher than the critical fire temperature of the combustibles and thus could cause the secondary fire disaster. In combination with the firing condition and thermal firing condition of the lignite separated products under the special heat environment, a firing analysis was conducted. Once the initial gas density and volume of the lignite seam gas explosion met the three essential factors of the combustibles after the explosion, a thermal firing phenomenon would occur by the explosion.
出处
《煤炭科学技术》
CAS
北大核心
2012年第5期35-37,41,共4页
Coal Science and Technology
基金
重庆市自然科学基金资助项目(cstc2011jjA90021)
关键词
褐煤
瓦斯爆炸
热力着火
快速热裂解
临界着火温度
lignite
gas explosion
thermal firing
rapid thermal cracking
critical firing temperature
