Table 2. Gas Content Measurement Results of
Loss Using the
Method
and the Power Function Method.
loss
calculated (cm3/g) |
deviations (cm3/g) |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
coal number | size (mm) | pressure (MPa) |
|
R12 | power function | R22 | actual loss (cm3/g) |
|
power function | ||
WYM | 50*100 | 0.5 | 0.40 | 0.9940 | 0.64 | 0.9962 | 0.83 | 0.43 | 0.19 | ||
1 | 0.61 | 0.9969 | 0.91 | 0.9937 | 1.13 | 0.52 | 0.22 | ||||
3 | 0.92 | 0.9953 | 1.57 | 0.9949 | 1.98 | 1.06 | 0.41 | ||||
0.5–1 | 0.5 | 0.61 | 0.9989 | 0.95 | 0.9947 | 1.19 | 0.58 | 0.24 | |||
1 | 0.89 | 0.9960 | 1.36 | 0.9935 | 1.69 | 0.80 | 0.33 | ||||
3 | 1.96 | 0.9999 | 2.10 | 0.9958 | 2.60 | 0.64 | 0.50 | ||||
PSM | 50*100 | 0.5 | 0.34 | 0.9982 | 0.35 | 0.9983 | 0.43 | 0.09 | 0.08 | ||
1 | 0.50 | 0.9960 | 0.59 | 0.9955 | 0.71 | 0.21 | 0.12 | ||||
3 | 0.85 | 0.9902 | 1.15 | 0.9964 | 1.42 | 0.57 | 0.27 | ||||
0.5–1 | 0.5 | 0.57 | 0.9982 | 0.64 | 0.9906 | 0.76 | 0.19 | 0.12 | |||
1 | 0.70 | 0.9931 | 0.82 | 0.9894 | 0.97 | 0.27 | 0.15 | ||||
3 | 1.22 | 0.9960 | 1.47 | 0.9970 | 1.80 | 0.58 | 0.33 | ||||
JM | 50*100 | 0.5 | 0.30 | 0.9995 | 0.33 | 0.9968 | 0.41 | 0.11 | 0.08 | ||
1 | 0.48 | 0.9970 | 0.53 | 0.9929 | 0.65 | 0.17 | 0.12 | ||||
3 | 0.82 | 0.9987 | 1.11 | 0.9972 | 1.37 | 0.55 | 0.26 | ||||
0.5–1 | 0.5 | 0.48 | 0.9960 | 0.56 | 0.9964 | 0.68 | 0.20 | 0.12 | |||
1 | 0.60 | 0.9970 | 0.73 | 0.9929 | 0.88 | 0.28 | 0.15 | ||||
3 | 1.00 | 0.9991 | 1.42 | 0.9959 | 1.77 | 0.77 | 0.35 | ||||
CYM | 50*100 | 0.5 | 0.20 | 0.9900 | 0.43 | 0.9915 | 0.54 | 0.34 | 0.11 | ||
1 | 0.22 | 0.9853 | 0.68 | 0.9941 | 0.88 | 0.66 | 0.2 | ||||
3 | 0.65 | 0.9859 | 1.96 | 0.9919 | 2.51 | 1.86 | 0.55 | ||||
0.5–1 | 0.5 | 0.22 | 0.9687 | 0.51 | 0.9897 | 0.65 | 0.43 | 0.14 | |||
1 | 0.27 | 0.9755 | 0.90 | 0.9915 | 1.13 | 0.86 | 0.23 | ||||
3 | 0.73 | 0.9880 | 2.28 | 0.9933 | 3.00 | 2.27 | 0.72 |