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目前已有多种方法可用于石化企业的风险定量评价,但是这些方法多数系基于二维风险分析,不能满足当今社会日趋增长的三维空间安全管理和风险评价的要求,因此,提出了三维风险场的评价理论,从三维风险等值面来考察风险的分布和风险变化率。该方法采用场论的基本知识,将风险场看作数量场,对不同事故的个体风险及其风险梯度进行叠加,得到个体风险及其变化率,并对个体风险在二维和三维坐标系中不同的空间分布进行了比较,并对该方法涉及到的经验参数和事故发生概率给出了相应的求解方法。
However, most of these methods are based on two-dimensional risk analysis and can not meet the growing demand of three-dimensional space security management and risk assessment in the society at present. Therefore, a three-dimensional risk field Evaluation theory, from the perspective of three-dimensional risk to examine the risk distribution and risk rate of change. This method uses the basic knowledge of the field theory and treats the risk field as a quantity field, and superposes the individual risk and its risk gradient of different accidents to obtain the individual risk and its rate of change. The risk of individual in two-dimensional and three-dimensional coordinate system Different spatial distributions are compared, and the corresponding solving methods are given for the empirical parameters involved in the method and the probability of accidents.