高斯烟羽扩散模型在化工装置突发煤气泄漏的环境健康风险评估中的应用

The Application of Gaussian Plume Air Dispersion Model in the Environmental Risk Assessment for Accidental Leakage of Coal Gas at One Chemical Apparatus

目的探索突发性有毒气体泄漏所致环境健康风险的评估技术。方法根据突发性有毒气体泄漏扩散特征,提出用高斯烟羽扩散模型对有毒气体泄漏造成的环境危害事故风险进行预先性分析的方法。结果发现该方法可以预先分析出环境污染事故不同危害程度的范围,摆脱了目前对突发性环境污染危害事故被动处置的应急状态。结论高斯烟羽模型既可以用于突发性有毒气体泄漏所致的环境危害事故的预先性分析,又可以对事故后危害程度范围进行模拟重现。该方法对我国突发性环境健康危害事故的应急管理具有积极借鉴意义。

Objectives To explore the technique of environmental health risk assessment applied to accidental leakage of toxic gas.Methods Based on the characteristics of leakage and dispersion from toxic gases,the mathematical model is adopted to pre-assess the risk of environmental accidents,which is called Gaussian Plume Air Dispersion Model.Results The degree of damage in the environmental pollution accidents can be pre-analyzed using this method,which could prevent passive treatment in face of emergency pollution accidents.Conclusions Gaussian Plume Air Dispersion Model can be applied to pre-analyze the environmental accidents by toxic gases,and it also can simulate and replicate the degree of damage after the accident,which is important in promoting the emergency management in environmental accidents.