燃气泄漏风险评价中不确定性问题的探讨

Probe into the Uncertainties in Risk Assessment of Urban Gas Leakage

讨论了燃气泄漏事故风险评价中泄漏的发生、泄漏源强度、扩散模式的不确定性问题。提供了确定瞬时泄漏和连续泄漏的方法 ,以及判定重气扩散时转变为中性阶段的准则。最后介绍了不确定性问题的研究方法。

Uncertainties in the occurrence of the leakage, the intensity of leakage source, and the diffusion model in the process of the risk assessment of urban gas leakage are discussed. The way for defining the instantaneous release and the continuous release, and the criteria for determining the passive phase of the transition of the heavy gas are put forward. Finally, method for the study of the uncertain problem is also introduced.