城市燃气管道泄漏事故风险场强度评价研究

发布时间：2018-02-14 01:06

本文关键词： 燃气管道系统泄漏事故风险强度评价风险场　出处：《安全与环境工程》2016年06期 　论文类型：期刊论文

【摘要】：城市燃气管道由于受到腐蚀、外力破坏等原因导致破裂,造成燃气大量泄漏,从而发生中毒、火灾、爆炸等事故,管道泄漏后在空间某点形成的风险场是多个危险源共同作用形成的。基于经典场理论提出城市燃气管道系统泄漏事故的三维风险场概念,借用工程数学经典矢量场理论推导出城市燃气管道系统泄漏事故三维风险场的风险强度公式,并根据爆炸事故风险传播受风速等环境因素影响,在风险强度公式中考虑了环境因素修正系数K,使得理论推导尽可能与实际情况相符。最后通过实例计算表明,利用风险强度公式评估燃气管道泄漏事故在空间某点的风险与实际相符合,该方法将系统风险研究从二维平面转化到三维立体中,使得评估结果更为科学、合理。
[Abstract]:Urban gas pipelines are ruptured due to corrosion and external force damage, resulting in a large amount of gas leakage, resulting in accidents such as poisoning, fire, explosion, etc. The risk field formed at a certain point in space after pipeline leakage is formed by the interaction of multiple hazard sources. Based on the classical field theory, the concept of three-dimensional risk field of leakage accident in urban gas pipeline system is proposed. Based on the classical vector field theory of engineering mathematics, the risk intensity formula of three dimensional risk field of urban gas pipeline system leakage accident is derived, and the risk propagation of explosion accident is affected by environmental factors such as wind speed and so on. The correction coefficient K of environmental factors is taken into account in the risk strength formula, which makes the theoretical derivation as far as possible consistent with the actual situation. Using the risk intensity formula to evaluate the risk of gas pipeline leakage accident at a certain point in space is in accordance with the actual situation. This method transforms the study of system risk from two-dimensional plane to three-dimensional and makes the evaluation result more scientific and reasonable.
【作者单位】：北京石油化工学院;北京市安全生产工程技术研究院;
【基金】：国家自然科学基金项目(51404029) 爆炸科学与技术国家重点实验室开放基金项目(KFJJ15-01M)
【分类号】：TU996.9

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