Study on Distribution Characteristics of Damage Range along Smooth Blasting Hole Based on PPV

Table 3

Borehole parameters and charge parameters for smooth blasting in the model experiments.

Borehole diameter (mm)	Borehole depth (cm)	Single charge length (cm)	Stemming length (cm)	Radial decoupling coefficient	Linear charge density (kg/m)
40	80	4	30	1.77	0.05