Design Method for Specific Charge in Deep Mining considering Influence of In Situ Stress

Table 3

Correction coefficients for specific charge under different stress conditions.

Blasting zone	Zone I	Zone II	Zone III	Zone IV	Zone V
Stress-to-strength ratio,	0.297	0.329	0.348	0.244	0.242
Lateral stress coefficient,	0.325	0.345	0.277	0.396	0.371
Correction coefficient for specific charge,	−0.291	−0.300	−0.243	−0.276	−0.275