条形装药在岩体中爆炸成腔过程的数值分析  

Numerical Analysis of Space Formation by Blasting with Linear Charges in Rock

作　　者：郑云木[1] 田强[1] 

机构地区：[1]后勤工程学院军事建筑工程系，重庆400041

出　　处：《后勤工程学院学报》2005年第1期90-92,100,共4页Journal of Logistical Engineering University

摘　　要：利用LS-DYNA非线性有限元程序,对不同药量等级的条形装药,进行了无限域岩体介质中的爆炸成腔数值模拟计算,得到了爆炸成腔过程的基本图像及爆腔形成的位移时程曲线,通过对爆腔半径的数据分析对比,得到条形装药的长径比值k与爆腔半径和装药半径之比值rα/ro呈线性关系、条形装药比集团装药具更强爆扩能力的结论.In this paper, the calculation of blasting numerical simulation is processed at various charge (amount) grade of linear charges in rock by using the LS - DYNA non - liner finite element program. Displacement - time curve and process of the space formation by blasting are obtained. In addition, the linear relationship between k and ra/r0 is obtained and the ability of compaction by blasting of linear charges is greater than that of group charges by analysis and comparison of the result of space radius caused by blasting.

关 键 词：条形装药 爆炸挤压 爆腔半径 

分 类 号：O383.1[理学—流体力学]