水下气体泄漏海面火灾后果预测及评估

doi:10.16265/j.cnki.issn1003-3033.2019.12.019

中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (12): 117-122.doi: 10.16265/j.cnki.issn1003-3033.2019.12.019

水下气体泄漏海面火灾后果预测及评估

李新宏¹ 副教授, 韩子月¹, 陈国明² 教授

1 西安建筑科技大学资源工程学院, 陕西西安 710055;
2 中国石油大学(华东) 海洋油气装备与安全技术研究中心, 山东青岛 266580

收稿日期:2019-09-22 修回日期:2019-11-20 出版日期:2019-12-28 发布日期:2020-11-24
作者简介:李新宏 (1991—),男,甘肃镇原人,博士,副教授,主要从事油气安全工程、安全信息化技术、风险分析与控制方面的研究。E-mail: safety_lxh@163.com。
基金资助:
国家重点研发计划课题资助(2016YFC0802305)。

Prediction and assessment of offshore fire resulting from subsea gas release

LI Xinhong¹, HAN Ziyue¹, CHEN Guoming²

1 School of Resource Engineering, Xi'an University of Architecture and Technology, Xi'an Shaanxi 710055, China;
2 Centre for Offshore Engineering and Safety Technology, China University of Petroleum (East China), Qingdao Shandong 266580, China

Received:2019-09-22 Revised:2019-11-20 Online:2019-12-28 Published:2020-11-24

摘要/Abstract

摘要： 为评估水下气体泄漏在海面形成的火灾后果,针对某海洋钻井平台上风向浅层气井喷导致的火灾场景,构建水下泄漏海面气体火灾后果预测与评估模型;模拟分析风载荷作用下的海面气体火灾演化过程,预测火灾高温和热辐射通量的时空分布特征;评估海面气体火灾对临近下风向海洋钻井平台钢结构及作业人员安全的影响。结果表明:海面气体火灾在风载荷作用下约40 s达到稳态,稳态火焰几乎覆盖整个海洋钻井平台上部,最大火焰高度约96 m;整个海洋平台都会受到火灾高温和热辐射的影响,火灾影响区域的最高温度达到1 500 ℃,热辐射通量为539 kW/m²;持续的高温和热辐射作用会使平台钢结构发生断裂或坍塌,造成作业人员严重伤亡。

关键词: 水下气体泄漏, 海面火灾, 海洋钻井平台, 数值仿真, 后果评估

Abstract: To assess the offshore fire consequence arisen from subsea gas release, the fire consequence prediction and assessment model was established considering the fire scenario caused by the shallow gas blowout in upwind of an offshore drilling platform. The evolution process of fire scenario under wind load was simulated and analyzed. The spatial and temporal distribution characteristics of high temperature and heat radiation flux generated during fire were predicted. The fire impact on the steel structure of offshore drilling platform and the safety of operators was assessed. The results show that offshore gas fire reaches the steady state at 40 s under the action of wind load, that the steady-state flame nearly covers the whole upper part of offshore platform and the maximum height of flame is about 96 m, that the whole offshore platform is affected by the high temperature of fire and heat radiation, the maximum temperature and radiation intensity on offshore drilling platform are 1 500 ℃ and 539 kW/m² respectively, and that the continuous high temperature and thermal radiation can cause the fracture or collapse of platform steel structure and the serious injury of personnel.

Key words: subsea gas release, offshore fire, offshore drilling platform, numerical simulation, consequence assessment

中图分类号:

X937

李新宏, 韩子月, 陈国明. 水下气体泄漏海面火灾后果预测及评估[J]. 中国安全科学学报, 2019, 29(12): 117-122.

LI Xinhong, HAN Ziyue, CHEN Guoming. Prediction and assessment of offshore fire resulting from subsea gas release[J]. China Safety Science Journal, 2019, 29(12): 117-122.

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水下气体泄漏海面火灾后果预测及评估

Prediction and assessment of offshore fire resulting from subsea gas release

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