条形药包爆破破岩规律的试验研究EXPERIMENTAL STUDY ON LAWS OF FRAGMENTATION IN ROCK BLASTING WITH LINEAR CHARGE
杨年华
Yang Nianhua(China Academy of Railway Sciences)
摘要(Abstract)：
分析了前人关于爆破破岩机理论述方面的矛盾，通过高速摄影观察有机玻璃中条形袋药爆炸波和破裂缝发展规律，得到了关于条形药包爆破破岩规律方面的新认识。提出了冲击该、气体膨胀压和反射拉伸波在破岩过程中各自所起的不同作用。特别在此基础上推出了条形药包下破裂深度计算公式，对工程实践有积极的指导作用。
The contradiction in discussion on the past theories of fragmen-tation in rock blasting is analysed.Some new knowledge on the mechanism of fragmentation in rock blasting with linear charge is gotten from the law of the development of the blasting wave and crack.The different effects of shock wave, gas expansion pressure, reflected extension wave are put forward. The formula for the depth of the fracture region under the linear charge is developed,It will be of helpful for engineering design practice.
关键词(KeyWords)：
条形药包，爆破破岩规律，下破裂深度
Linear charge Laws of fragmentation in rock blasting The depth of fracture region
基金项目(Foundation):
作者(Author):
杨年华
Yang Nianhua(China Academy of Railway Sciences)