Table 1 Experimental results of the basic physical characteristics in coals (M: moisture content; A: Ash content; V: volatile matter; FC: fixed carbon; ad: air drying basis; S: sulfur; O: oxygen; C: carbon; H: hydrogen; N: Nitrogen).

From: Damage constitutive model and experimental study of deep coal rock under thermal-hydro-mechanical coupling

Sample

Industrial analysis/%

Element analysis/%

Mad

Aad

Vad

FCad

S

O

C

H

N

Coal sample

1.68

7.62

14.15

76.55

0.28

7.63

83.14

4.58

4.34

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