Research Article
Experimental Investigation on Permeability and Mechanical Deformation of Coal Containing Gas under Load
Table 1
Features of experimental coal specimens.
| | Type | Specimen ID | Specimen size (mm) | Weight (g) | Density (g/cm3) | Mad (%) | Ad (%) | Ro,max (%) |
| | Raw coal | W1 | Φ49.9 × 100.25 | 285.1 | 1.463 | 0.52 | 12.45 | 3.24 | | W2 | Φ49.9 × 100.68 | 286.4 | 1.482 | 0.55 | | | | W3 | Φ49.9 × 100.88 | 296.3 | 1.475 | 0.50 | | | | W4 | Φ49.9 × 99.90 | 285.4 | 1.460 | 0.55 | | | | W5 | Φ49.9 × 100.05 | 286.3 | 1.465 | 0.53 | | | | W6 | Φ49.9 × 100.00 | 286.0 | 1.462 | 0.54 | | |
|
|
Mad: moisture of on air-dry basis; Ad: ash on a dry basis; Ro,max: maximum reflectivity on vitrinite.
|
