Major hazards and gasoline characters of pool fire were analyzed. As some uncertain factors of sealed gasoline tank leaking pool fire quantitative risk assessment can not be confirmed, the hazard result from pool fire accident might be uncertain. A risk assessment model of sealed gasoline tank leaking pool fire was developed and based on random sampling guesswork method, uncertainty analysis method was proposed. The method has been expatiated with the accident case. Hurting scope of gasoline pool fire heat radiation and distribution function of death radius was confirmed by computation and statistical analysis. As a result, the death radius, which plays an important part in quantitative risk assessment of pool fire, was obtained.%分析了汽油的危险特性及池火灾的主要特点,针对密闭汽油罐泄漏池火灾定量风险评估中不确定因素导致事故造成的危害结果不确定性问题,建立了密闭汽油罐泄漏池火灾风险评估模型,提出了一种基于随机抽样推测法的不确定性处理方法,计算了池火灾热辐射伤害范围,并通过统计分析确定人员死亡区域遵循的分布函数,进而确定该区域的大小,对于定量评估池火灾事故风险具有重要意义.
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