瓦斯爆炸作用下井口外部区域灾害分布特征

发布时间：2018-03-11 18:23

本文选题：瓦斯爆炸　切入点：冲击波　出处：《高压物理学报》2016年03期 　论文类型：期刊论文

【摘要】：瓦斯爆炸事故对井口外部区域存在破坏作用,增加了矿井配套基础设施及相关人员的事故风险。结合典型井下瓦斯爆炸事故案例,借助计算流体力学技术对煤矿立井内瓦斯爆炸及其灾害演化过程进行了系统研究,着重考查了井口外部区域冲击波超压和温度场的时空分布特征。研究表明,瓦斯爆炸对井口外部区域的主要危险源于沿水平方向传播的爆炸冲击波,其峰值超压及波及范围随瓦斯量的增加而逐渐增大,而井口外水平方向的高温灾害不明显。研究结论能够为煤炭工业场地平面布置、煤矿安全规程、风险评估及事故调查提供必要的参考依据。
[Abstract]:The gas explosion accident has a destructive effect on the outer area of the well head, which increases the accident risk of the supporting infrastructure and related personnel in the mine. Combined with the typical underground gas explosion accident case, With the help of computational fluid dynamics (CFD) technology, the evolution process of gas explosion and its disaster in coal mine shaft is systematically studied, and the space-time distribution characteristics of shock wave overpressure and temperature field in the outer area of wellhead are studied emphatically. The main hazard of gas explosion to the outer area of wellhead is the explosion shock wave propagating along the horizontal direction, and its peak overpressure and spread range increase with the increase of gas quantity. But the high temperature disaster in horizontal direction outside the well head is not obvious. The conclusion can provide the necessary reference for the layout of coal industry site, coal mine safety regulations, risk assessment and accident investigation.
【作者单位】：北京石油化工学院化学工程学院;北京市劳动保护科学研究所;
【基金】：国家自然科学基金(51404029) 北京市自然科学基金(8132029) 爆炸科学与技术国家重点实验室开放基金(KFJJ15-01M) 北京市优秀人才培养资助项目(2013D005005000006)
【分类号】：O382.1

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