Table 2 Experimental scheme diagram.

From: Multifactor analysis and dominant factor identification for coal seam gas drainage borehole instability

Coal sample number

Quality (g)

Initial axial pressure (MPa)

Confining pressure (MPa)

Gas pressure (MPa)

Temperature (ā„ƒ)

Q-1

259.25

12

6

1.4

25

Q-2

260.21

12

8

1.4

25

Q-3

257.99

12

10

1.4

25

Q-4

257.84

12

12

1.4

25

Q-5

255.93

12

8

1.0

25

Q-6

260.79

12

8

1.8

25

Q-7

263.50

12

8

2.2

25

Q-8

260.75

12

8

1.4

35

Q-9

260.22

12

8

1.4

45

Q-10

259.45

12

8

1.4

55