EXPERIMENTAL STUDY ON LAWS OF FRAGMENTATION IN ROCK BLASTING WITH LINEAR CHARGE
Yang Nianhua(China Academy of Railway Sciences)
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.
【CateGory Index】： TD235.12