Table 1 Basic mechanical parameters of coal and rock mass.

From: Dynamic response and failure characteristics of combined rocks under confining pressure

Sample

Compression strength (MPa)

Elastic modulus (GPa)

Poisson ratio

Anthracite

8.57

6.541

0.201

Bituminous coal

15.96

8.287

0.32

Limestone

48.33

38.37

0.26

Sandstone

20.05

24.68

0.20

Shale

77.98

30.59

0.24

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