Research Article
The Porosity Dynamic Model of the Compacted Broken Coal
Table 1
The initial mass content of each grain group.
| Coal sample | Particle size (mm) | d < 0.3 | d < 0.6 | d < 1 | d < 3 | d < 6 | d < 10 | d < 15 |
| 1# | Underscreening quality | 0.092 | 0.178 | 0.247 | 0.47 | 0.695 | 0.968 | 1.249 | Mass ratio | 0.0736 | 0.1425 | 0.1978 | 0.3763 | 0.5564 | 0.7750 | 1 | 2# | Underscreening quality | 0.044 | 0.083 | 0.132 | 0.317 | 0.565 | 0.865 | 1.231 | Mass ratio | 0.0357 | 0.0674 | 0.1072 | 0.2575 | 0.4590 | 0.7027 | 1 | 3# | Underscreening quality | 0.05 | 0.107 | 0.159 | 0.395 | 0.631 | 0.983 | 1.303 | Mass ratio | 0.0384 | 0.0821 | 0.1220 | 0.3031 | 0.4843 | 0.7544 | 1 |
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