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《Chinese Journal of Underground Space and Engineering》 2012-01
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The Dissemination Rule of Blasting Shock-wave in Subway Tunnel

Kong Desen1,2,Meng Qinghui2,Shi Mingchen2,Zhang Weiwei2(1.Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation(Shandong University of Science and Technology),Qingdao,Shandong 266510,China;2.College of Civil Engineering and Architecture,Shandong University of Science and Technology,Qingdao,Shandong 266510,China)  
Metro is a significant component of the lifeline engineering in a city and it has the characteristics of high cost,long service cycle and densely populated inner during the operation,which makes it a target of the terrorism bomb attack.The explosive blasting in subway tunnel induces shock-wave,it will generate reflection and superposition,the peak overpressure of shock-wave is far greater than that in free field,and,the propagation of shock-wave is more complicated.In order to obtain the dissemination rule of blasting shock-wave in subway tunnel,taking Nanjing subway tunnel as an example,the dynamic analysis software LS-DYNA and fluid-structure coupling computation were utilized in the model,a numerical simulation about 10kg TNT blasting in the subway tunnel was carried out,the propagation of blasting shock-wave was analyzed to get overpressure attenuation laws along longitudinal section of the subway tunnel.It offers base for emergency preplan and gorernment desision at terrorism bomb attack in subway tunnel.
【Fund】: 国家自然科学基金项目(41102166);; 山东省自然科学基金资助项目(Y2007F48);; 山东省“泰山学者”建设工程专项经费资助项目(SDTS2008);; 山东省高等学校优秀青年教师国内访问学者资助项目(SDVS2009);; 青岛市科技发展指导计划项目(KZJ-40)
【CateGory Index】: O382
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