Table 1 Coal seam characteristics.
Well area | Number of coal seam | Minimum thickness/m | Maximum thickness/m | Number of layers of dirt band | Texture of coal seam | Stable degree | Degree of recoverable |
|---|---|---|---|---|---|---|---|
W1 | 16 | 1.09 | 2.89 | 0–2 | Plain | Stabilization | District admissible |
27 | 0.60 | 2.85 | 0–4 | Relatively complicated | Relatively stable | District admissible | |
30 | 0.72 | 2.07 | 0–2 | Plain | Stabilization | District admissible | |
W2 | 16 | 0.96 | 4.05 | 0–3 | Relatively simple | Stabilization | District admissible |
27 | 0.61 | 3.29 | 1–7 | Complication | Relatively stable | District admissible | |
30 | 0.60 | 2.71 | 0–4 | Relatively complicated | Stabilization | Mostly admissible |
