高压天然气管道泄漏火球危害模拟研究

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中图分类号：TE88文献标识码：A

Abstract： Based on the thermal dose criterion， the mathematical model of flash fireball is established. Using MATLAB programming， the thermal radiation dose of dynamic flash fireball is calculated programmatically. The influences of leakage aperture， pipeline operating pressure and ambient temperature on the thermal radiation hazard range of the fireball are studied， and the boundary range of eight hazard areas under the studied conditions is obtained according to the critical thermal radiation dose. The results show that the critical thermal radiation hazard radius of flash fireball is approximately linearly positively correlated with the leakage aperture and pipeline medium transportation pressure， and the leakage aperture exhibits the greatest influence on the critical thermal radiation hazard radius.

Key words： natural gas pipelines; leakage diffusion; fireball fire; heat dose criteria; hazard radius

管道输送是天然气陆路输运最有效的方式，高压、大口径、高强度是目前长输管道的发展趋势，这种情况下天然气长输管道的失效泄漏事故将更加普遍和危险[1-3]。（剩余5940字）