Research on Optimization of Large Flow Hydraulic Punching Process in Zhaozhuang Mine

Table 2

Test parameters in the first punching area.

Borehole number	Quality of discharge (t)	Jet pressure (MPa)	Jet flow (L/min)
7-1#	3.3	15	208
8-1#	3.7	16	215
9-1#	3.2	16	215