储气库注采井蒸气云爆炸致灾范围研究
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摘要
针对储气库注采井蒸气云爆炸灾害,采用基于BEGGS阻流模型和注采井无阻流量的井口设施泄漏率计算模型、以及基于高斯烟羽的蒸气云散布模型和蒸气云爆炸TNT当量法,研究了储气库注采井蒸气云爆炸致灾范围确定方法,并分析了井喷模式下不同风速下注采井蒸气云爆炸对建筑物和人的致灾影响范围,为储气库泄漏后果评估与应急预案编制提供了技术支持。
Aiming at the hazards of vapor cloud explosion for injection-withdrawal wells of gas storage, the methods to determine the hazard range of vapor cloud explosion were studied by using the calculation model of leakage rate of wellhead facilities based on BEGGS blocking model and open flow capacity of injection-withdrawal wells, vapor cloud dispersion model based on gauss plume and TNT equivalent method of vapor cloud explosion, and the hazard range of vapor cloud explosion on buildings and people were provided under different wind speeds and blowout. The decision support can be provided for leakage consequences assessment and emergency plan.
Aiming at the hazards of vapor cloud explosion for injection-withdrawal wells of gas storage, the methods to determine the hazard range of vapor cloud explosion were studied by using the calculation model of leakage rate of wellhead facilities based on BEGGS blocking model and open flow capacity of injection-withdrawal wells, vapor cloud dispersion model based on gauss plume and TNT equivalent method of vapor cloud explosion, and the hazard range of vapor cloud explosion on buildings and people were provided under different wind speeds and blowout. The decision support can be provided for leakage consequences assessment and emergency plan.
引文
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[2] 李丽锋,罗金恒,赵新伟.盐穴地下储气库井口破裂火灾事故危险分析[J].油气储运.2013,32(10):1054-1057.
[3] D J Evans.An appraisal of underground gas storage technologies and incidents for the development of risk assessment methodology[R].RR605 Research Repot.
[4] 唐晨飞,张广文,王延平,等.美国Aliso Canyon地下储气库泄漏事故概况及反思[J].事故分析与预防,2016,16(7):5-8.
[5] H.Dale Beggs.Gas Production Operation[M].America:Oil & Gas Consultants International,1984:118.
[6] 尚文启.井喷点火过程天然气爆炸后果分析[J].中国安全生产科学技术,2006,28(6):7-9.
[7] 史文文.LNG气化站的风险评价及预警系统的构建[D].哈尔滨:哈尔滨工业大学,2010:48-49.
[8] 王大庆,高惠临.天然气管线泄漏扩散及危害区域分析.[J] 天然气工业,2006,26(7):120-122
[9] FEMA/DOT/EPA.Handbook of Chemical Hazard Analysis Procedures.U.S.Federal Emergency Management Agency,U.S.Department of Transportation,U.S.Environmental Protection Agency,Washington,D.C.1989.
[10] 梁开武,蔡治勇,刘春.天然气管道蒸气云爆炸事故影响因素动态分析[J].中国安全生产科学技术.2016(9),12:65-69.
[11] 王天瑜,吕辰,胡磬声,等.天然气管道蒸气云爆炸事故后果模拟研究[J].煤炭技术.2017,36(7):295-297.