摘要
针对当今城市隧道中比较常见的爆破震动问题进行分析,采用动力有限元软件对青黄海底隧道接线工程中的典型断面进行爆破震动数值模拟。分析结果显示,当相邻段别炮眼起爆时间间隔大于50 ms以后,可忽略爆破震动的叠加效应,因此可采用分段模拟的方法对隧道爆破效果进行分析,在此基础上对本工程钻爆设计进行了讨论,并提出了改进建议。
Blasting vibration is a common problem in nowaday tunnel construction in cities. In this paper this problem is analyzed with numerical method using dynamic finite element program on the basis of Qingdao- Huangdao cross-harbour guide llne tunnel project. By analysis, it is proved that stage simulation in common blasting numerical analysis is feasible, and the rationality of blasting design is judged by stage simulation, and an improved design is presented and examined.
出处
《石家庄铁道学院学报》
2007年第4期71-74,共4页
Journal of Shijiazhuang Railway Institute
关键词
爆破震动
爆破设计
数值模拟
动力有限元
blasting vibration
blasting design
numerical simulation
dynamic finite element
