Experimental study of flow field structure of interrupted pulsed water jet and breakage of hard rock

Interrupted pulsed water jet has great potential for application in hard rock breakage as it can be easily generated and controlled. The sharp nature of the head and tail of the jet significantly influences on water hammer pressure of the jet and efficiency of hard rock breakage. In this paper, the evolution of a single pulse was captured using high-speed photography and analyzed by numerical simulation. It was found that the velocity of the jet...