Research Article
The Porosity Dynamic Model of the Compacted Broken Coal
Table 2
The fractal dimension and porosity of the initial coal sample.
| | Coal sample | (kg/m3) | Quality (kg) | D | dmin (mm) | dmax (mm) | h0 (mm) | Section area of device (m2) | Experimental result | Theoretical calculation porosity | Relative error (%) |
| | 1# | 1.55 ∗ 103 | 1.249 | 2.369 | 0.01 | 15.0 | 134 | 0.00785 | 0.222 | 0.2002 | 9.8 | | 2# | 1.55 ∗ 103 | 1.231 | 2.158 | 0.01 | 15.0 | 130 | 0.221 | 0.2101 | 4.9 | | 3# | 1.55 ∗ 103 | 1.303 | 2.202 | 0.01 | 15.0 | 140 | 0.235 | 0.2211 | 5.9 |
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