Mechanism of rock directional fracture when blasting with dynamic caustics

被引：0
|
作者：
Li, Q [1 ]
Yang, RS [1 ]
Jin, KX [1 ]
Lang, QT [1 ]
Zhang, M [1 ]
Tong, Q [1 ]
Zhao, SL [1 ]
机构：
[1] China Univ Min & Technol, Beijing, Peoples R China
来源：
MINING SCIENCE AND TECHNOLOGY 99 | 1999年
关键词：
D O I：
暂无
中图分类号：
TD [矿业工程];
学科分类号：
0819 ;
摘要：
In order to make further quantitative analysis on crack propagation under blasting load, the paper first gives a method to research blasting mechanism with dynamic caustics. An experiment was conducted in which transmitted dynamic caustics under blasting load have been traced in a transparent material model, and a series of dynamic caustics photos were obtained. This paper also discusses the general law of crack propagation in slotted cartridge blasting and analyses the stress intensity factor around the crack tip in the progress of crack directional propagation quantitatively. The influence of slot width on the control effect of directional fracture is probed.
引用
收藏
页码：353 / 356
页数：4
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