Research Article

Blast-Induced Damage on Millisecond Blasting Model Test with Multicircle Vertical Blastholes

Table 1

Charging scheme.

Model numberCM-1CM-2CM-3CM-4

Detonation delay25 ms50 ms25 ms50 ms
First circleElectric detonator segment IElectric detonator segment IElectric detonator segment IElectric detonator segment I
Second circleElectric detonator segment IElectric detonator segment IElectric detonator segment IIElectric detonator segment III
Third circleElectric detonator segment IIElectric detonator segment VElectric detonator segment IIIElectric detonator segment V