Abstract: Through the high-speed videography for the blasting process of concrete model containing layered filling solids, the motion process of layered filling solids under the action of blasting was observed and the motion law was discovered. The motion velocity variation of layered filling solids 2~4 cm away from the blast hole center can be divided into three sections, namely rapid decrease of velocity, basically stabilization of velocity and rapid decrease to zero. The motion velocity of layered filling solids increases with the increase of explosive amount. At a high explosive amount, the velocity decrease section is wider and the velocity stability section is narrower. The results provide a basis for a further study of the blasting effect on the layered filling solids in rockmass and the rockmass stability.

Key words: High-speed videography, Layered filling solids, Displacement, Velocity