Research on Optimal Design of Pressure Relief Blasting Parameters of Middle Rock Pillar in Near Vertical Coal Seam

Table 4

Calculation results of the coal rock power system.

Explosive quantity (kg)	Energy generated (J)	Radius of failure zone (m)	Radius of plastic zone in simulation experiment (m)	Error value (％)
2	400000	4.26	4.44	4
4	800000	4.66	4.59	1.5
6	1200000	5.03	4.96	1.4