Optimal Nozzle Structure for an Abrasive Gas Jet for Rock Breakage

Table 12

Erosion depth of the different nozzles when gas pressure is different.

Gas pressure (MPa)	Erosion depth of rock samples (mm)
	Nozzle a	Nozzle b	Nozzle c	Nozzle d
10	30.57	26.49	22.84	25.28
15	40.26	37.19	33.98	35.72
20	46.58	43.87	40.20	42.90
25	47.29	45.22	40.13	44.19