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Shock and Vibration
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Shock and Vibration
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2017
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Article
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Tab 6
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Research Article
Numerical Simulation of Blast Vibration and Crack Forming Effect of Rock-Anchored Beam Excavation in Deep Underground Caverns
Table 6
The damage depth, area of surrounding rocks, and the crushing rate of excavated rock mass.
Crustal stress/MPa
0
5
10
20
40
80
Damage depth of surrounding rocks/cm
>50
>50
≈20
≈10
<10
≈10
Damage area of surrounding rocks/%
>50
>50
≈40
≈20
<20
≈6.7
Crushing rate of excavated rock mass/%
>75
>70
>70
>50
<30
<10