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为研究输气管道泄漏爆炸对并行管道动力响应的影响，基于气云爆炸过程，利用ANSYS软件建立了三硝基甲苯(trinitrotoluene, TNT)-空气-土体-管道有限元模型，分析了并行间距、壁厚、管径三个参数对并行管道动力响应的影响，并进行了敏感性分析。结果表明：目标管道的最大等效应力随管径增加而增加，随并行间距、壁厚的增加而减小；输气管道泄漏爆炸时，并行间距对管道动力响应的影响最大，其次是管径和壁厚；在相应模拟工况下，原油管道的安全并行间距为6.18 m,安全管径为742 mm,安全壁厚为26.4 mm。从安全生产的角度考虑，埋地管道并行敷设时，应首先考虑增大管道并行间距以保证管道安全运行，其次为减小管道管径、增大管道壁厚。研究结果可为并行长输管道的安全评估提供参考。
Abstract：The leakage of buried gas pipelines containing defects can cause gas cloud explosions, posing a severe threat to the safe operation of parallel pipelines. Therefore, studying the dynamic response of parallel pipelines under gas pipeline leakage explosions is significant for ensuring the long-term stable and safe operation of parallel pipelines. This article is based on the method of energy equivalence to determine the equivalent trinitrotoluene(TNT) equivalent of gas cloud explosions. Based on the physical process of gas cloud explosion. A finite element model of TNT-air-soil-pipeline was established using ANSYS software. The influence of parallel spacing, wall thickness, and pipe diameter on the dynamic response of parallel pipelines was analyzed. The importance of different influencing factors was obtained using the single-factor sensitivity analysis method. The results show that the maximum equivalent stress of the target pipeline increases with increasing pipe diameter and decreases with increasing parallel spacing and wall thickness. Under corresponding simulated working conditions, the crude oil pipeline with X70 pipe material, 1 m burial depth, and 8 MPa pressure has a safe parallel spacing of 6.18 m, a safe pipe diameter of 742 mm, and a safe wall thickness of 26.4 mm. Parallel spacing has the most significant effect on the dynamic response of parallel pipelines during gas pipeline leakage explosions, followed by pipe diameter and wall thickness. From the perspective of safety production, when laying buried pipelines in parallel, the first consideration should be to increase the spacing between parallel pipelines to ensure safe pipeline operation, then reduce the pipeline's diameter and increase the pipeline's wall thickness. The research results can provide a reference for the safety assessment, risk prevention, and control of parallel long-distance pipelines during the design and operation stages and a scientific basis for the safety distance and operation protection decision-making of pipeline laying.
[1] 朱渊，师吉浩，陈国明，等.长输天然气埋地并行管道泄漏爆炸的安全间距[J].油气储运，2016,35(6):591-595.ZHU Y,SHI J H,CHEN G M,et al.Safety distance for leakage-induced explosion of long-distance parallel buried gas pipelines[J].Oil & Gas Storage and Transportation,2016,35(6):591-595.
[2] Transportation Safety Board of Canada (TSB).Pipeline investigation report:P11H0011[R].Ottawa:Transportation Safety Board of Canada,2011:1-21.
[3] 梁博.爆炸载荷下并行埋地输气管道动力响应分析[D].成都：西南石油大学，2018.LIANG B.Dynamic response study of buried pipeline subjected to blast loads[D].Chengdu:Southwest Petroleum University,2018.
[4] KANARACHOS A,PROVATIDIS C H.Determination of buried structure loads due to blast explosions[J].WIT Transactions onthe Built Environment,1970,35:1-10.
[5] Pipeline Research Council International (PRCI).Line rupture and the spacing of parallel lines[R].Chantilly,VA,United States:Pipeline Research Council International,2002.
[6] GUO Y B,HE L G,WANG D G,et al.Numerical investigation of surface conduit parallel gas pipeline explosive based on the TNT equivalent weight method[J].Journal of Loss Prevention in the Process Industries,2016,44:360-368.
[7] 杨明.同沟敷设条件下埋地高压长输管道爆炸危害的试验研究[J].安全与环境学报，2018,18(4):1334-1338.YANG M.Exploring the explosion risks due to the share-layout long-distance high-pressure pipelines in the same ditch-channel[J].Journal of Safety and Environment,2018,18(4):1334-1338.
[8] 姚安林，田晓建，徐涛龙，等.管道爆炸对同沟邻管的冲击效应及防爆墙抗爆性能[J].石油学报，2020,41(6):753-761.YAO A L,TIAN X J,XU T L,et al.Impact effect of pipeline explosion to adjacent pipelines in the same trench and explosion-proof performance of explosion-proof wall[J].Acta Petrolei Sinica,2020,41(6):753-761.
[9] 田晓建，龙大平，吴庆龙，等.爆炸冲击作用下埋地并行输气管道的动力响应[J].石油机械，2020,48(6):134-142.TIAN X J,LONG D P,WU Q L,et al.Dynamic response of buried parallel gas pipeline under the explosion impact[J].China Petroleum Machinery,2020,48(6):134-142.
[10] 陈国华，徐佳，周志航，等.埋地输气管道泄漏爆炸作用下并行邻管的动力响应[J].油气储运，2020,39(11):1228-1237.CHEN G H,XU J,ZHOU Z H,et al.Dynamic response of adjacent parallel pipes to leakage and explosion of buried gas pipelines[J].Oil & Gas Storage and Transportation,2020,39(11):1228-1237.
[11] 刘奎荣，余东亮，廖柯熹，等.隧道并行管道蒸气云爆炸后果与措施分析[J].消防科学与技术，2022,41(1):31-35.LIU K R,YU D L,LIAO K X,et al.Analysis of the consequences and measures of vapor cloud explosion in tunnels with parallel pipelines[J].Fire Science and Technology,2022,41(1):31-35.
[12] 宁建国，马天宝.计算爆炸力学[M].北京：国防工业出版社，2015.NING J G,MA T B.Computational explosion mechanics[M].Beijing:National Defense Industry Press,2015.
[13] 魏韡.爆炸冲击荷载下油气管道的动态响应分析与安全评价[D].成都：西南石油大学，2014.WEI W.Dynamic response analysis and safety evaluation of oil and gas pipelines under explosion impact loading[D].Chengdu:Southwest Petroleum University,2014.
[14] 李颖，王志强，柴象海，等.航空发动机鸟撞分析中的应变率相关材料模型标定及使用研究[J].航空科学技术，2014,25(9):66-70.LI Y,WANG Z Q,CHAI X H,et al.Calibration and application of strain rate dependent material models for aero engine bird strike analysis[J].Aeronautical Science & Technology,2014,25(9):66-70.
[15] Federal Highway Administration.Evaluation of LS-DYNA soil materials:FHWA-HRT04-094[R].Melean,VA:Federal Highway Administration,2004.
[16] 荣凯，杨军，董文学，等.爆炸荷载作用下覆土库外部冲击波传播规律[J].工程爆破，2020,26(3):1-7.RONG K,YANG J,DONG W X,et al.The law of shock wave propagation outside Earth Covered Magazine under explosion[J].Engineering Blasting,2020,26(3):1-7.
[17] 李正鹏，曲艳东.爆炸载荷作用下焊缝区附近埋地X70钢管的动力响应分析[J].高压物理学报，2020,34(3):124-131.LI Z P,QU Y D.Dynamic response analysis of buried X70 steel pipe near weld zone under blast loads[J].Chinese Journal of High Pressure Physics,2020,34(3):124-131.
[18] LI Z M,QI N,LUO Z B,et al.Basic mechanical parameter relations of soft clay in Pearl River Delta[J].Open Civil Engineering Journal,2014,8(1):320-325.
[19] 李海超，魏连雨，常春伟.黄土中爆炸挤密实验与数值模拟[J].爆炸与冲击，2018,38(2):289-294.LI H C,WEI L Y,CHANG C W.Experiment and numerical simulation of explosion compaction in loess[J].Explosion and Shock Waves,2018,38(2):289-294.
[20] 杨秀敏.爆炸冲击现象数值模拟[M].合肥：中国科学技术大学出版社，2010.YANG X M.Numerical simulation for explosion and phenomena[M].Hefei:University of Science and Technology of China Press,2010.
[21] WANG I T.Numerical and experimental verification of finite element mesh convergence under explosion loading[J].Journal of Vibroengineering,2014,16(4):1786-1798.
[22] WANG Z T,WANG W,ZHANG M.Sensitivity analysis of factors influencing buried pipeline's seismic behavior based on General Regression Neural Network[J].Disaster Advances,2013,6:240-246.
基本信息:
DOI：10.13637/j.issn.1009-6094.2024.0763
中图分类号:TE88
引用信息:
[1]陈利琼,赖欣,胡洪宣,等.气云爆炸驱动下并行管道动力响应分析[J].安全与环境学报,2024,24(11):4253-4262.DOI:10.13637/j.issn.1009-6094.2024.0763.
2024-07-30
2024-07-30
2024-07-30