海底天然气管道疲劳破坏泄漏灾害研究  

Hazard analysis on the offshore natural gas pipelines fatigue failure leakage

作　　者：王小完[1] 骆济豪 袁宏伟 骆正山[1] WANG Xiao-wan;LUO Ji-hao;YUAN Hong-wei;LUO Zheng-shan(School of Management,Xi'an University of Architecture and Technology,Shaanxi Xi'an 710055,China;High School Affiliated to Xi'an Jiaotong University,Shaanxi Xi'an 710055,China)

机构地区：[1]西安建筑科技大学管理学院,陕西西安710055 [2]西安交通大学附属中学,陕西西安710055

出　　处：《消防科学与技术》2018年第6期729-732,共4页Fire Science and Technology

基　　金：国家自然科学基金资助项目(61271278);陕西省重点学科建设专项资金资助项目(E08001);陕西省教育厅专项基金项目(16JK1465)

摘　　要：为研究海底天然气管道疲劳损伤引起的泄漏事故灾害,对水体中的燃气泄漏和扩散阶段进行建模,将热辐射模型与爆破冲击模型相结合对燃气造成的蒸气云爆炸后果进行定量研究,计算不同伤害等级对应的伤害半径。以某一海底天然气管道为例进行验证,结果表明:泄漏孔径越大,泄漏速率越快,气体到达水面的速度越大,危险半径越大;从爆炸冲击和热辐射两种灾害后果出发,通过对应模型计算不同等级灾害的伤害半径,为根据两种不同的事故类型在不同区域内采取预防、应急措施提供依据。For the study on the large leakage accident disasters of marine natural gas pipeline caused by the fatigue damage,the models of gas leakage and diffusion in water were set,the quantitative study on vapor cloud explosion consequences was carried out by combining the thermal radiation model and blasting model,and the damage radius correspond to different damage level were calculated.The method was verified by taking a submarine gas pipeline as an example.The results showed that the larger the aperture,the faster the rate of gas leakage,the faster the gas to the water surface,the greater the risk radius from the blast.The damage radius of different disaster grade was calculated by corresponding model based on the disaster consequence of explosion shock and heat radiation,to provide the basis for taking prevention and emergency respond measures in different areas.

关 键 词：天然气管道 疲劳破坏 泄漏事故 蒸气云 爆炸冲击 热辐射 

分 类 号：X932[环境科学与工程—安全科学] TU996.6[建筑科学—供热、供燃气、通风及空调工程]