管道爆炸对同沟邻管的冲击效应及防爆墙抗爆性能  

Impact effect of pipeline explosion to adjacent pipelines in the same trench and explosion-proof performance of explosion-proof wall

作　　者：姚安林[1] 田晓建 徐涛龙[1] 高山 蒋宏业[1] 李又绿[1] Yao Anlin;Tian Xiaojian;Xu Taolong;Gao Shan;Jiang Hongye;Li Youlü(School of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Sichuan Chengdu 610500,China;PetroChina West-East Gas Pipeline Company,Shanghai 200122,China;PetroChina West Pipeline Company,Xinjiang Urumchi 830013,China)

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]中国石油西气东输管道公司,上海200122 [3]中国石油西部管道公司,新疆乌鲁木齐830013

出　　处：《石油学报》2020年第6期753-761,共9页Acta Petrolei Sinica

基　　金：国家科技支撑计划项目(2011BAK06B01-11);中国石油化工股份有限公司科研项目(35150000-14-ZC0607-0003);油气消防四川省重点实验室开放基金项目(YQXF201601)资助。

摘　　要：针对干线天然气管道物理爆破对同沟并行邻管的潜在危害,通过探讨任意拉格朗日-欧拉法(ALE)、光滑粒子流体动力学与有限单元耦合法(SPH-FEM)和爆腔内壁施加压力时程法(BC)开展管道爆炸模拟的可行性,优选SPH-FEM耦合法建立埋地并行输气管道爆炸耦合模型,通过分析不同起爆位置下炸药量对同沟并行邻管的冲击行为,提出降低并行管道风险的抗爆隔爆措施。研究结果表明:药包起爆位置对并行邻管的危害较大,迎爆点为动力响应的最热点;建立的防爆墙可有效削减并行管道的失效风险,防爆墙深度对管体的应力风险削减较大,对振速的屏蔽能力较弱;防爆墙材质强度越高,管体的风险水平越低。Aiming at potential hazards from the physical blast of main natural gas pipelines to the adjacent parallel pipelines in the same trench,this study determ ines the feasibility of sim ulating pipeline explosion by the Arbitrary Lagrange-E uler(ALE),Sm ooth Particle Hydrodynam ics-F inite Elem ent Method(SPH-FEM)a n d Blasting Cavity(BC),optimizes the SPH-FEM coupling method to establish an explosion coupling model for the buried parallel gas pipelines,and proposes anti-explosion and explosion-proofm easures to reduce the risks related to parallel pipelines by analyzing the explosive charge im pacton the adjacent parallel pipelines in the same ditch at different detonation initiation positions.The research results show that the detonation initiation position of explosive charge can cause considerable harm to the adjacent parallel pipeline,and the frontal explosion point corresponds to the largestdynamic response.The failure risk of the parallel pipeline can be effectively reduced by the established explosion-proof wall,the stress on the pipe body can be greatly reduced by the depth of the explosion-proof wall,and the wall has weak shielding ability for vibration velocity.The higher the strength of the material of the explosion-proof wall,the lower the risk level of the pipe body.

关 键 词：并行输气管道 全尺寸爆破 SPH-FEM耦合法 动力响应 抗爆隔爆 

分 类 号：TE881[石油与天然气工程—油气储运工程]