The dynamic stress field and the mechanism of the directed fracture blasting are analyzed.
分析和讨论了定向断裂爆破动应力场参数和定向断裂爆破作用机理；
The practical directed fracture blasting method and the corresponding technology are optimized.
优选了实用的定向断裂爆破新方法和配套工艺。
The model test investigations of directed fracture blasting have been carried out by using the super dynamic measuring system and the 3-dimensional laser holographic dynamic photoelastic instrument.
采用三维激光全息动光弹超动态综合测试系统进行了定向断裂爆破模型试验研究。
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