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Shock and Vibration
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2024
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Article
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Tab 5
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Research Article
Burst Failure Characteristics and Energy Evolution Law of Coal with Prefabricated Cracks at Different Angles
Table 5
Burst energy velocity index of coal under different crack angles.
Specimen types
Average value
Complete cylinder
19.22
0° cracked cylinder
8.85
30° cracked cylinder
11.1
60° cracked cylinder
14.53
90° cracked cylinder
16.94