Table 2 Peak stress and loading pressure fitting coefficient of different samples.

From: Dynamic tensile properties, deformation, and failure testing of impact-loaded coal samples with various water content

Water content

a

b

c

Correlation coefficient R2

Dry

0.4857

 − 2.3457

5.84

0.9915

Natural

0.4685

 − 2.3725

5.66

0.9816

Saturated

0.5685

 − 3.0145

6.53

0.9576

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