天然气管道环境风险影响分析

Natural Gas Pipeline Environmental Risk Impact Analysis

对某市天然气输气管道工程不同气象、不同源高条件下事故环境风险的影响范围进行预测与分析。采用气体扩散多烟团模式预测天然气管道泄露及火灾事故的影响范围。结果表明:如果发生天然气泄漏、火灾事故,天然气管道泄漏处下风向的污染物危害范围呈圆环分布;各污染物的扩散多以小风1.5 m/s,稳定度为F类条件下的影响范围最大;在一定的风速和稳定度下,事故影响范围随源高的增高而降低。

To predict and analyze the influence range of environmental risk of Natural gas pipeline project under different weather,and different heights of the Forecast natural gas pipeline leak and fire sphere of influenceaccident in Multi-puff model.The results show that：If there＇s event of natural gas leak and fire accident,the harmful range of natural gas pipeline leak at the downwind is distributed in rings;The pollutants spread under the conditions of small wind 1.5 m/s,F stability ; Under a certain wind speed and stability,the scope increases on the height is lower.