Research Article
Study on the Physical Properties and Joint Evolution Characteristics of Three-Dimensional Reconstructed Coal
Table 3
Main characteristic parameters of the internal joints of the coal samples.
| | Name of coal sample | Joint area (cm2) | Joint surface density (cm2/cm3) | Effective joint area (cm2) | Percentage of effective throttling | Size range (cm) | Angle range (°) |
| | 1 | 146.85 | 0.75 | 100.75 | 68.61 | 0.08–3.140 | 4.63–84.27 | | 2 | 202.98 | 1.03 | 99.77 | 49.15 | 0.068–4.00 | 4.63–84.27 | | 3 | 235.4 | 1.20 | 193.3 | 84.30 | 0.06–4.900 | 4.63–84.27 | | 4 | 420.4 | 2.14 | 210.72 | 50.12 | 0.075–2.72 | 4.63–84.27 | | 5 | 618.39 | 3.15 | 418.38 | 77.84 | 0.077–6.40 | 4.63–84.27 |
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