Numerical Simulation Research on Suitable Over-drilling Length of Different Charge Structures

摘要：

　　In blasting engineering, technique methods such as different charge conditions and over-drilling length are used in order to control over-under break and toe rock.In this article, with numerical simulation and field test the blasting process of middle-deep hole blasting under continuous charge and hole bottom deck charge has been studied and the best over-drilling length has been discussed.According to the study results the best over-drilling length of different charge structures are suggested; the results also show that: using hole-bottom deck charge struc ture with small deck ratio can control over-under break effectively.

关键词： numerical simulation over-under break toe rock charge structure

作者: KANG Qiang ZHAO Mingsheng CHI Enan

作者单位: Guizhou Xinlian Blast Engineering Group Limited Corp.,Guiyang,Guizhou,550002,China; College of Civil Guizhou Xinlian Blast Engineering Group Limited Corp.,Guiyang,Guizhou,550002,China

会议类型: 国际会议

会议名称: The 7th International Conference on Explosives and Blasting(China-Japan-Korea)(ICEB2013)第七届炸药和爆破(中日韩)国际会议

会议地点: 珠海

会议语种:英文

页码: 30-37

在线出版日期: 2013-11-22（万方平台首次上网日期，不代表论文的发表时间）