Hazard Characteristics from Gas Explosion in Underground Constructions

摘要：

　　Gas explosion is likely to become a new type of attack aimed at underground spaces by terrorists.In this paper,as an example for methane-air gaseous mixture,distribution characteristics of shock wave,flame,temperature field and toxic gaseous products generated from gas explosion in a long straight laneway were analyzed.Along the increasing axial distance,shock wave overpressure increases in original flammable gas area but decreases beyond the original gas area.Range of flame exceeds the original gas area.Flame accelerates continually in the original gas area but decelerates beyond the original gas area.The temperature attenuates slowly along the increasing distance in the flame area by virtue of flame front,but attenuates quickly along the increasing distance beyond the flame region.High temperature hazard involves farther area beyond the original gas area.

关键词： Gas explosion Hazard effect Shock wave Underground space High temperature

作者: Pang Lei Tian Jialei Yao Wei Xu Yabo

作者单位: Beijing Municipal Institute of Labour Protection, No.55 Taoranting Road, Beijing, P.R.China, 100054

会议类型: 国际会议

会议名称: 2012 International Symposium on Safety Science and Engineering in China (2012安全科学与工程国际会议)

会议地点: 北京

会议语种:英文

页码: 293-296

在线出版日期: 2012-11-07（万方平台首次上网日期，不代表论文的发表时间）