Abstract:By using a set of self-designed experimental device,a series of experiments on rock cutting by abrasive waterjet under deep water are conducted. To study the main factors influencing the depth of rock cutting,a series of simulation experiments about variations of target distance,cutting times,jet horizontally moving velocity and the different depths of water have been performed to understand the rules of the depths of rock cutting,the main cutting parameters,and the effects of depths of water. The rock cutting techniques under deep water of practical application should consider the relations between cutting times,jet horizontally moving velocity and efficiency. The reasonable target distance of the materials such as rock and so on is one of key issues;and it has the practical significance only if the effective target distance is controlled.