毒气泄漏过程及其危险区域分析

Analysis on the Leaking Process of Toxic Gases from Chemical Accidents and Determination of the Risky Area

在化学事故中 ,毒气的大量泄漏扩散不仅会造成极其严重的人员和财产损失 ,同时会产生很大的社会影响。而在各种毒气泄漏方式中 ,以灾难性破裂引发的泄漏危害最大 ,而连续泄漏则更具广泛的代表性。笔者利用已有的理论模型 ,分析了这两种泄漏类型的特点及其扩散规律 ,提出了伤害区域的划分和估算方法 ,为准确地预测毒气扩散危险区域 ,及时采取有效措施组织抢险救援活动 。

With the development of chemical industries, disasters usually happen after the leaking of hazardous chemicals. Base on the leaking forms, the leaking sources may be divided into instantaneous and continuous ones. The model of the leakage and gaseous diffusion from chemical accidents is analyzed. The toxic gas concentrations and risky zones have been estimated according to difference distance from the leaking source. The method for determining the risky area is put forward. It could be taken as a theoretical guidance for fire brigade to determine the risky area on time and implement the rescue efficiently.