石棉保护层对热辐射连锁效应的影响  

Influence of Protective Layer of Asbestos on Domino Effect Caused by Heat Radiation

作　　者：孙东亮[1,2] 蒋军成[1] 张明广[1] 王志荣[1] 黄光团[2] 乔建江[2] 

机构地区：[1]南京工业大学城市建设与安全工程学院,安全工程研究所,江苏省城市与工业安全重点实验室,南京210009 [2]华东理工大学资源与环境工程学院,国家环境保护化工过程环境风险评价与控制重点实验室,上海200237

出　　处：《工业安全与环保》2012年第7期15-17,共3页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(No.71001051;50904037);国家十一五科技支撑计划(2007BAK22B04);南京工业大学青年教师学术基金(No.39714005);江苏省普通高校研究生科研创新计划(CX09B 142Z);上海市重点学科建设项目(B506)

摘　　要：分析了石棉保护层对热辐射连锁破坏效应的影响。结果表明,保护层可显著降低储罐的压力升高速率,使储罐的失效时间增大。热辐射作用下储罐的失效时间随石棉层厚度的增加呈现指数递增趋势,应用数据拟合,建立了二者的关系式。在储罐失效时间大于热辐射持续时间的条件下,建立了避免热辐射连锁破坏的准则,即储罐防热层的理论设计依据。The effect of the protective layer of asbestos on the domino effect caused by heat radiation is analyzed. The re- sults show that the rate of the pressure rise in the tank could be significantly reduced by the protective layer, which could make the failure time of the tank increase. The time of failure for the vessel caused by heat radiation increases exponentially with the thickness of the protective layer of asbestos, and the correlation between the two variables is developed by data fit- ring. The criterion avoiding the domino effect caused by heat radiation, that is, the theoretical basis for the design of the protective layer against the heat radiation, has been created when the time of the vessel failure is larger than the duration of the heat radiation.

关 键 词：石棉保护层 热辐射 多米诺效应 失效时间 

分 类 号：TU545[建筑科学—建筑技术科学]