
Relationship between loading rate and aspect ratio
Figures of the Article
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SHPB test system
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Test coal samples
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Schematic diagram of sample loading
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Force balance at both ends of samples with different l/d
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Time-history course of dynamic shear stress curves of coal samples with different l/d
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Failure modes of samples under different l/d
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Relationship between dynamic shear strength and impact pressure
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Relationship between dynamic shear strength and l/d
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Curves of dynamic shear strength of coal samples with l/d under different values of parameter a
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Relationship between dynamic shear strength and loading rate
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Relationship between loading rate and aspect ratio
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CT scan slices of coal
Tables of the Article
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p/MPa $ \dot \tau $/(GPa·s-1) 加载率/(GPa·s-1) 平均值 理论值 0.25 91.81 90.90 89.09 95.14 85.75 0.35 138.91 137.68 139.58 143.50 130.64 0.45 232.41 229.61 231.52 225.60 230.82 0.55 335.75 322.44 318.52 321.34 310.23 -
l/d 0.4 0.6 0.8 内部三维裂隙 裂隙体积/mm3 21.70 26.20 50.00