盐岩地下储气库泄漏的喷射火事故后果定量分析

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Abstract To improve working security of underground gas storages in salt rock，a model for calculating the gas leakage rate at steady state was established；and a method for consequence analysis of thermal radiation from jet fire was presented based on probability equation and consequence evaluation model. The hazard distance estimated by the proposed method was then compared with the area of burn in the observation of the actual accidents. It is found that the estimated hazard distance agrees well with the observed value；and the maximum deviation by the proposed method is less than 20%. Furthermore，the main factors that influence the hazard range associated with jet fire accident from underground gas storages in salt rock were discussed. The results indicate that the hazard distance increases with the increase of operating pressure(or buried-depth) and pipeline diameter when a jet fire accident from the underground gas storages in salt rock happens. The quantitative assessment model will provide reference for quantitative hazard analysis of jet fire caused by gas leakage from underground gas storages in salt rock.

Key words： numerical analysis gas storages in salt rock leakage rate jet fire probability equation consequence quantitative analysis

Received: 09 May 2012

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https://rockmech.whrsm.ac.cn/EN/Y2012/V31/I9/1846

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