化工重大泄漏事故扩散过程的模拟研究

Simulative Research on Diffusion Process of Major Leakage Accidents in Chemical Industry

基于江苏工业学院油气储运安全综合实验模型平台,并结合江苏江东化工股份有限公司的实际,研究分析了由于危险源的客观存在和企业在城市时、空结构中的潜在不安全性,认为企业危险源对城市公共安全的影响是绝对的。在试验室建立试验模型,用示踪剂法模拟研究了气体瞬时泄漏的扩散过程并作了定性分析,初步确定了泄漏气体浓度与相关物理量的变化关系:c=xQ3.fvt.x,为进一步进行定量分析提供了科学依据。研究成果对有针对性的建立应急救援预案,实施有效的现场控制,也具有一定的参考价值。

The research was based on experimental platform of oil-gas storage and transportation security in Jiangsu Polytechnic University with the practice in Jiangdong Chemical Co. Ltd. , Jiangsu. It gave the analysis that the effects of enterprise hazards on urban public security was absolute, owing to the objective existence and potential risk of enterprises in space--time structure. The experimental model was constructed in laboratory and tracer method was used to simulate the diffusion process of instantaneous leakage of gas. The course of gas-leakage diffusion was qualitatively analyzed and the variable relationship between gassy density and related physical quantity was elementarily determined： c=Q/x^2·（v·x/t）. The research provides a scientific gist for further quantitative analysis and has certain reference value to constructing emergency response rescue plan and implementing effective field control.