常规面板堆石坝坝前水下防爆距离的确定和影响因素
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摘要
鉴于混凝土面板堆石坝较弱的抗爆性能,确定合理的坝前水下防爆距离,为坝前水下反恐安全防护设计和预警监测范围提供参考是必要的。选取常规100 m级高的面板堆石坝作为分析对象,借助有限元程序Abaqus/Explic-it,采用声学介质描述库水,采用大坝-地基-库水系统有限元模型,主要考虑坝前不同距离发生10 kg TNT当量水下爆炸,研究混凝土面板的损伤破坏情况及其影响因素。计算结果表明:堆石体变形模量Er、面板竖缝和周边缝摩擦系数fj、面板与堆石体之间摩擦系数fb等三个参数在常规范围内取值不会对最终面板破坏的预测产生质的影响。得到结论:坝前水下防爆距离Dp定为200 m是合适的。
In view of the weak knock resistance of concrete face rockfill dam(CFRD),it is essential to determine a rational underwater explosion protection range in front of a dam in the design of anti-terrorism safety protection,underwater monitoring and prewarning.A conventional 100 m-high CFRD was analyzed using Abaqus/Explicit finite element analysis software.The structural damage and the failure of concrete face and their influencing factors were focused on.The dam-foundation-water interaction was considered and the water was simulated using acoustic element.Several explosive distances were supposed with a 10 kg-TNT charge underwater explosion in front of the dam.The result shows that different conventional assignments of the three parameters including rockfill's deformation modulus Er,friction factor of vertical and peripheral joints fj and friction factor of contact between concrete face and rockfill fb do not exert an essential influence on the prediction of concrete face's structural failure.It is concluded that the rational underwater explosion protection distance Dp in front of the dam should be determined as 200 m.
引文
[1]Federal Emergency Management Agency.Dam safety and security in the United States:a progress report on the national dam safety program in fiscal years2002and2003[R].U.S.Department of Homeland Security,2003.
    [2]林祥钦.防恐操作平台:美国对水坝人为破坏的防护策略[J].大坝与安全,2003(4):59-61.LIN Shyang-chin.Protection dam strategy against terrorism in USA[J].Dam and Safety,2003(4):59-61.
    [3]李鸿波,张我华,陈云敏.爆炸冲击荷载作用下重力坝三维各向异性脆性动力损伤有限元分析[J].岩石力学与工程学报,2006,25(8):1598-1605.LI Hong-bo,ZHANG Wo-hua,CHEN Yun-min.3D finite element analysis of anisotropic brittle dynamic damage in gravity dam under blast-impact load[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(8):1598-1605.
    [4]李本平.制导炸弹连续打击下混凝土重力坝的破坏效应[J].爆炸与冲击,2010,30(2):220-224.LI Ben-ping.Damage effect of a concrete gravity dam under continuous attacks of guided bombs[J].Explosion and Shock Waves,2010,30(2):220-224.
    [5]孟会林,刘代志,孙新利.水中爆炸荷载下混凝土重力坝动力特性分析[A].国家安全地球物理丛书(三)—地球物理探测与应用[C].西安:西安地图出版社,2007:212-221.
    [6]徐俊祥,刘西拉.水中爆炸冲击下混凝土坝动力响应的全耦合分析[J].上海交通大学学报,2008,42(6):1001-1004.XU Jun-xiang,LIU Xi-la.Full coupled simulation of concrete dams subjected to underwater explosion[J].Journal of Shanghai Jiaotong University,2008,42(6):1001-1004.
    [7]陆路,李昕,周晶.水下爆炸引起的混凝土坝危险性估计[J].水资源与水工程学报,2010,21(5):6-9.LU Lu,LI Xin,ZHOU Jing.Risk analysis of high concrete dam result from underwater explosion[J].Journal of Water Resources and Water Engineering,2010,21(5):6-9.
    [8]王山山,任青文.重力坝在冲击荷载作用下破坏模型试验[J].水力发电学报,2010,29(5):11-13.WANG Shan-shan,REN Qing-wen.Experimental study of the gravity dam damage caused by impact load[J].Journal of Hydroelectric Engineering,2010,29(5):11-13.
    [9]张雪东,侯瑜京,梁向前,等.水下爆破对大坝影响的离心模拟试验研究[J].西北地震学报,2011,33(S):234-236.ZHANG Xue-dong,HOU Yu-jing,LIANG Xiang-qian,et al.Centrifuge modeling research on the influence of underwater blasting on a dam[J].Northwestern Seismological Journal,2011,33(S):234-236.
    [10]杨泽艳,周建平,蒋国澄,等.中国混凝土面板堆石坝的发展[J].水力发电,2011,37(2):18-23.YANG Ze-yan,ZHOU Jian-ping,JIANG Guo-cheng,et al.Development of concrete faced rockfill dam in China[J].Water Power,2011,37(2):18-23.
    [11]郦能惠.高混凝土面板堆石坝设计新理念[J].中国工程科学,2011,13(3):12-18.LI Neng-hui.New concept of design for high concrete face rockfill dams[J].Engineering Sciences,2011,13(3):12-18.
    [12]刘军,刘汉龙,张正珺.爆炸荷载下土石坝动力响应特征的数值模拟[J].防灾减灾工程学报,2010,30(1):10-16.LIU Jun,LIU Han-long,ZHANG Zheng-jun.Numerical simulation of dynamic response of an earth and rock-fill dam to a blast loading[J].Journal of Disaster Prevention and Mitigation Engineering,2010,30(1):10-16.
    [13]刘科种,徐更光,辛春亮,等.AUTODYN水下爆炸数值模拟研究[J].爆破,2009,26(3):18-21.LIU Ke-zhong,XU Geng-guang,XIN Chun-liang,et al.Research on numerical simulation in underwater explosion by AUTODYN[J].Blasting,2009,26(3):18-21.
    [14]张振华,朱锡,白雪飞.水下爆炸冲击波的数值模拟研究[J].爆炸与冲击,2004,24(2):182-188.ZHANG Zhen-hua,ZHU Xi,BAI Xue-fei.The study on numerical simulation of underwater blast wave[J].Explosion and Shock Waves,2004,24(2):182-188.
    [15]姚熊亮,张阿漫,许维军,等.基于ABAQUS软件的舰船水下爆炸研究[J].哈尔滨工程大学学报,2006,27(1):37-41.YAO Xiong-liang,ZHANG A-man,XU Wei-jun,et al.Research on warship underwater explosion with ABAQUS software[J].Journal of Harbin Engineering University,2006,27(1):37-41.
    [16]辛春亮,秦健,徐更光,等.数值模拟软件在水下爆炸模拟中的应用研究[A].第四届全国爆炸力学实验技术学术会议论文集[C].2006:232-236.
    [17]孔德森,张伟伟,孟庆辉,等.TNT当量法估算地铁恐怖爆炸中的炸药当量[J].地下空间与工程学报,2010,6(1):197-200.KONG De-sen,ZHANG Wei-wei,MENG Qing-hui,et al.Estimation and evaluation of terror explosion equivalent in underground by TNT equivalent[J].Chinese Journal of Underground Space and Engineering,2010,6(1):197-200.
    [18]刘磊,汪旭光,杨溢,等.不同敏化材料的乳化炸药抗深水压力性能的实验研究[J].爆破,2010,27(2):10-13.LIU Lei,WANG Xu-guang,YANG Yi,et al.Experimental study on compression resistance characteristic of emulsion explosives with different sensitizer in deep water[J].Blasting,2010,27(2):10-13.
    [19]张可玉,王兴雁,詹发民,等.深水爆破中的难题与对策[J].工程爆破,2006,12(4):57-59.ZHANG Ke-yu,WANG Xing-yan,ZHAN Fa-min,et al.Problems and countermeasures of blasting in deep water[J].Engineering Blasting,2006,12(4):57-59.
    [20]Jin Q K,Ding G Y.A finite element analysis of ship sections subjected to underwater explosion[J].International Journal of Impact Engineering,2011,38(7):558-566.
    [21]Huan Y,Fang Q,Chen L,et al.Evaluation of blast-resistant performance predicted by damaged plasticity model for concrete[J].Transactions of Tianjin University,2008,14(6):414-421.
    [22]杨启贵,常晓林,周创兵,等.水布垭超高面板堆石坝变形控制方法研究[J].岩土力学,2010,31(S2):247-253.YANG Qi-gui,CHANG Xiao-lin,ZHOU Chuang-bing,et al.Study of dam deformation control method for Shuibuya high concrete faced rockfill dam[J].Rock and Soil Mechanics,2010,31(S2):247-253.
    [23]Kwon Y W,Fox P K.Underwater shock response of a cylinder subjected to a side-on explosion[J].Computers and Structures,1993,48(4):637-646.
    [24]刘军.混凝土损伤分析及其工程应用[D].大连:大连理工大学,2004.

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