摘要
本文利用大型 ADINA有限元程序对三维切槽孔、二维切槽孔和圆形孔爆破作了线弹性数值分析 ,结果表明三维槽孔爆破具有应力高度集中现象、应力的空间分布可以人为控制、切槽效应小于二维切槽孔爆破 ,遵守能量守恒规律。这说明三维切槽孔爆破方法能够应用于破岩爆破 ,其效率明显高于传统的圆孔爆破方法。
The linear elastic numerical analysis on blasting in holes with three-dimensional slots, two dimensional slots and circular holes were carried out by large scaled finite element program ADINA.The results show that there was highly stress concentration for blasting with three-dimensional slots.The distribution of stress in space could be controlled artificially. The slot effect was more than that for blasting with two-dimensional slots can be used for rock breaking and its effect is much more than that of traditional blasting in circular holes. [
出处
《地下空间》
CSCD
2000年第1期36-42,共7页
Underground Space
基金
重庆市科委攻关项目资助 !项目编号 :渝科委计 [1999]18号 - 35
关键词
三维切槽孔
爆破
数值分析
Three dimensional slots, blasting, numerical analysis
