Research Article
Study on Deformation and Fracture Evolution of Underground Reservoir Coal Pillar Dam under Different Mining Conditions
Table 1
Simulation scheme of orthogonal experiment.
| Test | Length of working face/m | Width of coal pillar/m | Mining height/m | Water pressure/MPa |
| 1 | 100 | 20 | 1.5 | 0.5 | 2 | 100 | 25 | 2 | 1 | 3 | 100 | 30 | 2.5 | 1.5 | 4 | 100 | 35 | 3 | 2 | 5 | 150 | 20 | 2 | 1.5 | 6 | 150 | 25 | 1.5 | 2 | 7 | 150 | 30 | 3 | 0.5 | 8 | 150 | 35 | 2.5 | 1 | 9 | 200 | 20 | 2.5 | 2 | 10 | 200 | 25 | 3 | 1.5 | 11 | 200 | 30 | 1.5 | 1 | 12 | 200 | 35 | 2 | 0.5 | 13 | 250 | 20 | 3 | 1 | 14 | 250 | 25 | 2.5 | 0.5 | 15 | 250 | 30 | 2 | 2 | 16 | 250 | 35 | 1.5 | 1.5 |
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