The Influence Mechanism of the Master Weak Interlayer on Bench Blasting Effect and Its Evaluation Method

Table 2

Design parameters of the numerical blasting model.

Drilling diameter d (mm)	Hole distance, a (m)	Overdrilling depth, h (m)	Drilling depth, L (m)	Packing length, ld (m)
138	2.42	1.3	11.3	2.8