Mathematical Problems in Engineering / 2019 / Article / Tab 3

Research Article

Stability Analysis of Underground Multicavities in Bench Blasting Vibration

Table 3

Critical vibration velocity of the wall rock of the grotto[5].

Compressive strength (MPa)Tensile strength 
No damage 
Slight damage 
Intermediate damage (m/s)Serious damage 

Hard rock75–1102.1–
Soft rock40–1001.1–

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