摩擦火花引爆瓦斯时点燃温度特性理论研究  

Study on ignition temperature characteristic offrictional spark inducing gas

作　　者：周心权[1] 周博潇[1] 朱红青[1] 常文杰[2] 郭达[2] 

机构地区：[1]中国矿业大学北京校区安全工程系,北京100083 [2]开滦集团有限责任公司,河北唐山063018

出　　处：《湘潭矿业学院学报》2004年第1期1-4,共4页Journal of Xiangtan Mining Institute

基　　金：国家自然科学基金重点项目资助(编号:50134040)

摘　　要：基于国内外有关摩擦火花引燃瓦斯的研究成果,分析因摩擦形成的高温热痕引燃瓦斯机理,假设高温热痕与周边风流和岩壁之间的热交换为具有固定温度边界的半无限大固体的一维瞬态热对流和导热问题,运用燃烧学、传热学理论,详细分析了摩擦机械能引燃瓦斯的机理及其过程,建立了高温热痕与岩壁和风流之间的导热和对流的微分方程,通过拉普拉斯变换,推导出摩擦火花引燃瓦斯的温度阈值.图1,参10.Based on the former research results at home and abroad on the gas ignited by frictional spark, heat transfer model between high-temperature groove and airflow and rock wall is supposed a one-dimensional problem of dynamical heat convention and conduction on or in the semi-infinite solid. This paper presents the further theoretical and experimental study on the mechanism and the law of gas combustion and explosion induced by the frictional mechanical energy by combining the theories of combustion, computational combustion and heat transfer. Two mathematical models of heat conduction between high temperature groove and rock wall, and heat convection between high temperature trace and airflow are developed. Based on Laplace transform, the temperature threshold of gas ignited by frictional spark is deduced. The temperature threshold is validated according to experimental result. 1fig.,10refs.

关 键 词：摩擦火花 瓦斯爆炸 点燃温度 传热模型 温度阈值 

分 类 号：TD752.2[矿业工程—矿井通风与安全]