油料洞库主罐室地震作用破坏机理
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摘要
油料洞库担负着我国未来石油储备的重要任务,为深入研究油料洞库在地震作用下的响应规律,运用FLAC3D软件,采用动力时程法对油料洞库的简化模型进行数值模拟分析。从不同围岩级别、不同埋深、不同地震烈度3个方面分析地震作用时水平峰值位移和最大拉应力峰值的变化规律。结果表明:随着围岩级别从Ⅲ级到Ⅰ级的变化以及埋深的增加,油料洞库的抗震性能逐渐提高;无论何种工况,最大拉应力峰值均发生在主罐室与支通道交接的墙角处;9度地震时各监测点水平峰值位移大幅增加,塑性区已经贯通,故在油料洞库选址时应尽可能避开可能发生9度及以上地震的地区。
Oil storage cavern plays an important role in storing oil for the future use.To further study the earthquake response law in the main tank room of oil storage cavern,numerical analysis of the simplified model of oil storage cavern is conducted with dynamic timing method and FLAC3D software.The horizon hump displacement and hump of max tension stress under earthquake are analysed in the following three aspacts: different rock groups,different depths and different earthquake intensity.The results show that the earthquake resistance of the oil storage cavern gradually improves as the rock groups change from Ⅲ to I and the depth increases;the hump of max tension stress occurs in the corner between the main tank room and subchannel handover under all working conditions;When the 9 degree earthquake occurs,the horizon hump displacement of each monitoring site substantially increases and the plastic zone is opened,therefore,the areas of where 9 degrees and above earthquakes might occur should be avoided in the site selection of oil storage cavern.
Oil storage cavern plays an important role in storing oil for the future use.To further study the earthquake response law in the main tank room of oil storage cavern,numerical analysis of the simplified model of oil storage cavern is conducted with dynamic timing method and FLAC3D software.The horizon hump displacement and hump of max tension stress under earthquake are analysed in the following three aspacts: different rock groups,different depths and different earthquake intensity.The results show that the earthquake resistance of the oil storage cavern gradually improves as the rock groups change from Ⅲ to I and the depth increases;the hump of max tension stress occurs in the corner between the main tank room and subchannel handover under all working conditions;When the 9 degree earthquake occurs,the horizon hump displacement of each monitoring site substantially increases and the plastic zone is opened,therefore,the areas of where 9 degrees and above earthquakes might occur should be avoided in the site selection of oil storage cavern.
引文
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[2]刘琦,卢耀如,张凤娥.地下水封储油库库址的水文地质工程地质问题[J].水文地质工程地质,2008,35(4):1-5.Liu Qi,Lu Yao ru,Zhang Feng e.Hydrogeological and engineering geological problems of the site of underground oil storage caverns with water curtain[J].Hydrogeology and Engineering Geology,2008,35(4):1-5.
[3]魏巍.洞室群围岩稳定性数值模拟分析[D].北京:北京交通大学,2010:1-2.
[4]王芝银,李云鹏,郭书太,等.大型地下储油洞粘弹性稳定性分析[J].岩土力学,2005,26(11):1705-1710.Wang Zhi yin,Li Yun peng,Guo Shu tai,et al.Viscoelastic stability analysis of underground petroleum storage caverns[J].Rock and Soil Me chanics,2005,26(11):1705-1710.
[5]范乾权,张赞牢,焦光伟,等.覆土油罐护体的动力模型建立与抗震性能分析[J].后勤工程学院学报,2010,26(1):54-57.Fan Qian quan,Zhang Zan lao,Jiao Guang wei,et al.Dynamic model establishing and anti seismic capability analysis of the buried oil tank wall[J].Journal of Logistical Engineering University,2010,26(1):54-57.
[6]郭青青.水工地下厂房岩体隧洞地震反应的初步分析[D].大连:大连理工大学,2009:1.
[7]张志国,肖明,陈俊涛.大型地下洞室地震灾变过程三维动力有限元模拟[J].岩石力学与工程学报,2011,30(3):509-523.Zhang Zhi guo,Xiao Ming,Chen Jun tao.Simulation of earthquake disaster process of large scale underground caverns using three dimensional dynamic finite element method[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(3):509-523.
[8]刘茂龙.城市地下空间开发中大型地下结构抗震性能的研究[D].广州:广州大学,2011:1.
[9]黄胜,陈卫忠,杨建平,等.地下工程地震动力响应及抗震研究[J].岩石力学与工程学报,2009,28(3):483-490.Huang Sheng,Chen Wei zhong,Yang Jian ping,et al.Research on earthquake induced dynamic respones and aseismic measures for under ground engineering[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(3):483-490.
[10]尤红兵,张郁山,赵风新.地震动峰值速度对地下隧洞内力的影晌研究[J].震灾防御技术,2011,6(2):105-115.You Hong bing,Zhang Yu shan,Zhao Feng xin.Influence of peak ground velocity on the internal force of underground tunnel[J].Technology for Earthquake Disaster Prevention,2011,6(2):105-115.
[11]郑颖人,肖强,叶海林,等.地震隧洞稳定性分析探讨[J].岩石力学与工程学报,2010,29(6):1081-1089.Zheng Ying ren,Xiao Qiang,Ye Hai lin,et al.Study of tunnel stability analysis with seismic load[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(6):1081-1089.
[12]马秀让.油库设计实用手册[M].北京:中国石化出版社,2009:148.
[13]朱婉莉.地下油库工程罐室掘进施工技术[J].企业技术开发,2010,29(12):79-80.Zhu Wan li.Technology of tank chamber excavation during underground oil storage construction[J].Technological Development of Enterprise,2010,29(12):79-80.
[14]熊良宵,李天斌,刘勇.隧道地震响应数值模拟研究[J].地质力学学报,2007,13(3):255-260.Xiong Liang xiao,Li Tian bin,Liu Yong.Numerical simulation of seismic response at the entrance of the unsymmetrical loading tunnel[J].Jour nal of Geomechanics,2007,13(3):255-260.
[15]刘波,韩彦辉.FLAC原理、实例与应用指南[M].北京:人民交通出版社,2005:16.
[16]胡聿贤.地震工程学[M].2版.北京:地震出版社,2006:91-104.
[17]陈育民,徐鼎平.FLAC/FLAC3D基础与工程实例[M].北京:中国水利水电出版社,2008:199.
[18]张裕,刘元雪,王培勇,等.中隔板对单洞双层隧道抗震性能的影响[J].后勤工程学院学报,2012,28(6):1-7.Zhang Yu,Liu Yuan xue,Wang Pei yong,et al.Impact of the baffle plate on earthquake resistance of single hole double decked tunnel[J].Jour nal of Logistical Engineering University,2012,28(6):1-7.
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