摘要
为有效降低井喷失控场景下人员的应急疏散风险,提出针对司钻房控制室爆炸载荷的安全撤离分析方法。首先,根据司钻房控制室载荷设计规范和布局,确定司钻房的爆炸载荷阈值;然后,运用多能法初步估计爆炸载荷阈值对应的等效气云体积,并构建井喷失控场景平台爆炸仿真模型,借助逆推法确定爆炸载荷的可燃气云体积阈值;最后,针对井喷重组分气体扩散过程的危险气云体积变化曲线,确定不同场景下的可用安全疏散时间T A,通过对比所需安全疏散时间T R,判断人员能否安全撤离。结果表明:所提方法可以针对多种井喷场景下的人员安全撤离给出指导建议,其中,井喷速率和风速对T A有显著影响,当风速增至7 m/s时可以保证司钻人员的安全撤离,而井喷速率的增加则会显著降低T A,当井喷速率>390 m/s时,会威胁司钻人员的安全撤离。
To reduce the emergency evacuation risk of driller house under a blowout scenario,a safe evacuation analysis method for driller under the explosion load condition of driller house was proposed.Firstly,the explosion load threshold of the driller house was determined according to the load design norms and the layout of the driller house.The equivalent gas cloud volume was initially determined by utilizing the multi-energy method.Furthermore,the volume threshold of the combustible gas cloud for explosion load was determined by the inversion method based on constructed simulation model of the platform explosion under the blowout scenario.Finally,T A value of the driller was determined according to the volume change of the gas cloud during the heavy component gas diffusion process.By comparing T A with T R,it could be judged whether the driller could evacuate safely.The results show that this method can provide forward suggestions for drillers in various blowout scenarios,in which the blowout rate and wind speed have great significant impacts on T A value.The safe evacuation of the driller can be ensured when the wind speed increases to 7 m/s.In comparison,increasing the blowout rate can significantly reduce T A value.It is a threat to the safe evacuation of drillers when the blowout rate is greater than 390 m/s.
作者
朱敬宇
陈国明
张少禹
齐心歌
ZHU Jingyu;CHEN Guoming;ZHANG Shaoyu;QI Xin'ge(Tianjin Fire Science and Technology Research Institute of MEM,Tianjin 300381,China;Centre for Offshore Engineering and Safety Technology,China University of Petroleum,Qingdao Shandong,266580,China;College of Safety Science and Engineering Civil Aviation University of China,Tianjin 300300,China)
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2023年第11期150-155,共6页
China Safety Science Journal
基金
国家重点研发计划项目(2017YFC0804501)
天津市自然科学基金资助(22JCQNJC01720)。
关键词
司钻房
爆炸载荷
安全撤离
井喷事故
可燃气云
driller house
explosion load
safety evacuation
blowout accidents
flammable cloud
