Table 3 Basic test parameters.

From: Study on the characteristics of acoustic-thermal precursors of destabilization damage in coal-rock combination bodies with different proportions

Specimen number

Compressive strength (MPa)

Average surface temperature (°C)

Maximum temperature at failure (°C)

CR-11

13.07

21.61

22.42

CR-12

13.72

22.32

22.87

CR-13

12.63

21.82

22.13

CR-21

14.75

21.49

22.02

CR-22

13.98

21.52

21.93

CR-23

13.52

22.09

22.66

CR-31

18.57

21.70

22.11

CR-32

18.93

21.81

22.13

CR-33

18.48

21.42

21.98

CR-41

20.38

21.57

22.04

CR-42

19.50

21.83

22.36

CR-43

19.77

21.63

22.18

CR-51

21.80

21.47

22.17

CR-52

22.07

21.81

22.33

CR-53

23.86

21.68

22.21

C-11

9.94

21.67

22.01

C-12

9.06

22.14

22.86

C-13

9.97

21.79

22.30

R-11

86.75

16.35

20.43

R-12

91.12

15.25

22.63

R-13

91.65

15.76

18.49

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