Fig 1.
Uncoupled charge structure.
Fig 2.
Numerical model.
Fig 3.
P-α State equation.
Table 1.
RHT parameters of rocks.
Table 2.
The parameters of explosive.
Fig 4.
Comparison of numerical simulation results and experimental results.
Fig 5.
Location of monitoring points.
Fig 6.
Effective stress distribution of concentric uncoupled and eccentric uncoupled charge blasting when r=6 cm (single cartridge).
Fig 7.
Effective stress on circular line with different r.
Fig 8.
Effective stress attenuation in directions A, B and C (single cartridge).
Fig 9.
Different charge structures of double cartridge.
Fig 10.
Different charge structures of the three rolls.
Fig 11.
Effective stress distribution of concentric uncoupled and eccentric uncoupled charge blasting when r=6 cm (double cartridge).
Fig 12.
Effective stress distribution of concentric uncoupled and eccentric uncoupled charge blasting when r=6 cm (three charge rolls).
Fig 13.
Effective stress attenuation in directions A, B and C (double cartridge).
Fig 14.
Effective stress attenuation in directions A, B and C (double cartridge).
Fig 15.
Damage evolution process of concentric and eccentric uncoupled blasting rock (single cartridge).
Fig 16.
Damage evolution process of concentric and eccentric uncoupled blasting rock (double cartridge).
Fig 17.
Damage evolution process of concentric and eccentric uncoupled blasting rock (three charge volumes).
Fig 18.
Damage degree of blasting rock with different charge structures of concentric uncoupling and eccentric uncoupling.
Fig 19.
Comparison of damage degree in the upper and lower parts of the rock around the gun hole.