Research Article

Micropore Structure and Fractal Characteristics of Low-Permeability Coal Seams

Table 2

Fractal dimensions of pore distribution of raw coal samples.

Coal sampleMagnificationFractal dimensionMean fractal dimension

B-15001.90310.943261.7468
10001.75690.97957
1000+1.63390.93567
20001.78150.96458
2000+1.65860.94362

B-25001.70580.951241.45716
10001.31350.96959
1000+1.58790.97451
20001.18180.93462
2000+1.49680.96786

B-35001.96120.978961.79388
10001.49170.96323
1000+1.81410.93417
20001.80780.97489
2000+1.89460.96587

B-45001.85440.994521.7989
10001.66640.9764
1000+1.97310.96312
20001.65860.94754
2000+1.8420.96851

B-55001.98590.983941.8371
10001.78580.97153
1000+1.88750.96728
20001.74150.97555
2000+1.78480.96173

B-65001.89090.942831.69184
10001.66970.96428
1000+1.85210.95784
20001.41240.92375
2000+1.63410.97618