力学与实践 ›› 2000, Vol. 22 ›› Issue (5): 0-0.DOI: 10.6052/1000-0879-f2000-144

• 论文 •    下一篇

微差爆破震动叠加起始位置数值模拟

徐全军 龙源   

  1. 南京工程兵学院
  • 收稿日期:2008-01-16 修回日期:1900-01-01 出版日期:2000-10-10 发布日期:2000-10-10

NUMERICAL SIMULATION OF THE STARTING POSITION OF GROUND VIBRATION IN SHORT DELAY BLASTS

  • Received:2008-01-16 Revised:1900-01-01 Online:2000-10-10 Published:2000-10-10

摘要: 采用ANSYS/LS-DYNA3D程序对岩体中双孔微差爆破近源场爆破振动进行了模拟.结果表明,随着离爆源距离的增加,质点振动波形的持续时间变长,同时二炮孔爆破振动波形中质点处于静止状态的间隔变小并产生叠加二因此通过数值模拟可确定微差爆破近区振动叠加起始位置.

Abstract: In this axticle numerical simulation is conducted with ANSYS / LS- DYNA3D software for ground vibration of single hole and double holes in rock near the source in bench blast. The results show that sustaining duration of particle vibration becomes longer; with the increased distance, and the interval of the moments between the first and second blast waves becomes,shorter' So the starting position of delay blast superposition can be determined by a numerical simulation.