A Study on Cut Blasting with Large Diameter Charges in Hard Rock Roadways

Table 8

Blasting parameters for cut blasting with a large diameter charge.

Hole name	Hole no.	Number of holes	Hole diameter (mm)	Charge diameter (mm)	Charge quantity		Detonator order
					Explosive volume per hole	Total weight (kg)
Cut hole	1–6	6	50	45	3.3	13.86	1
Auxiliary hole	7–14	8	42	35	3.0	8.40	2
Auxiliary hole	15–25	11	42	35	3.0	11.55	3
Auxiliary hole	26–39	14	42	35	3.0	14.70	4
Peripheral hole	40–60	21	42	35	2.0	14.70	5
Bottom hole	61–68	8	42	35	3.0	8.40	5
Total	—	68	—	—	—	71.61	—