Experimental Study on Frequency Modulation Damping Effect of Digital Detonator in Road Clearance Blasting

Table 1

Blasting hole array parameters.

Blasting parameters	Design values
Critical thickness (m)	2–8
Hole depth (m)	1.7–7.7
Aperture (mm)	70
Rock angle (°)	Perilous rock inclination 45
Hole dip angle (°)	Vertical perilous rock surface
Line of least resistance (m)	East side ≤ 1.0; west side ≥ 1.2
Pitch (m)	1.0
Array pitch (m)	1.0
Block length (m)	≥1.5
Unit explosive consumption (kg/m^3)	0.55
Single hole dosage (kg)	0.935–4.235