Research Article
Permeability Enhancement and Gas Drainage Effect in Deep High Gassy Coal Seams via Long-Distance Pressure Relief Mining: A Case Study
Table 1
Coalbed permeability in primary coal mining countries [
10,
11].
| | Country | Mining area | Permeability (mD) |
| | Germany, Poland | | 10−2 – 10−1 | | Australia | Sydney basin | 10−3 – 1.5 × 10−1 | | Bowen basin | 10−2 – 102 | | America | San Juan basin | 10 – 1.5 × 102 | | Black warrior basin | 5 – 50 | | China | Most mining areas | 10−4 – 10−3 | | Pingdingshan mining area | 10−4 – 2.28 × 10−2 | | Fengcheng, Shuicheng, Hegang, Liulin, and Kailuan mining areas | 10−1 – 1.8 |
|
|
