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

Table 1

Test parameters in the first punching area.

Borehole number	Quality of discharge (t)	Jet pressure (MPa)	Jet flow (L/min)
1-1#	4	15	208
2-1#	4.6	16	215
3-1#	3	16	215
4-1#	5	17	221
5-1#	3.5	15	208
6-1#	6	17	221