STUDIES ON THE MECHANISM OF WATER JET-ASSISTED DRILLING TECHNOLOGY(2)——HIGH-SPEED DRIP IMPACTING WITH SOLID TARGET
水射流辅助破岩机理研究（2）－水滴撞击

The dynamics of a single high-speed drip impacting with solid target are simulated by MSC.Dytran. The relations between the damage depth or damage width and the initial pressure,the velocity,the angle incidence of drips,the thickness of target are shown by curves,and the physical mechanism is explained. Hopkinson spallation is explained by using the theory of stress waves.The mechanism of water jet impacting rock is also discussed in this paper.