Research Article
Grading Evaluation of Goaf Stability Based on Entropy and Normal Cloud Model
Table 6
Evaluation results of goaf stability and comparison with the actual situation.
| Sample | Comprehensive uncertainty | Discrimination results | Actual level | U (I) | U (II) | U (III) | U (IV) |
| 1 | 0.2663 | 0.3237 | 0.2460 | 0.1224 | II | II | 2 | 0.1374 | 0.1725 | 0.1887 | 0.4429 | III ∼ IV | III | 3 | 0.1251 | 0.1998 | 0.1868 | 0.4702 | III ∼ IV | III | 4 | 0.1254 | 0.2361 | 0.1553 | 0.5175 | IV | IV | 5 | 0.2858 | 0.0333 | 0.0610 | 0.5826 | IV | IV | 6 | 0.2831 | 0.1431 | 0.3516 | 0.1820 | III | III | 7 | 0.1207 | 0.1905 | 0.2298 | 0.4133 | III ∼ IV | III | 8 | 0.2816 | 0.3716 | 0.1894 | 0.1363 | II | II | 9 | 0.1888 | 0.1949 | 0.3252 | 0.2925 | III | III | 10 | 0.2457 | 0.2501 | 0.2963 | 0.1750 | III | III | 11 | 0.0139 | 0.3924 | 0.4433 | 0.0835 | III | III | 12 | 0.1901 | 0.1992 | 0.2585 | 0.2996 | III ∼ IV | III | 13 | 0.0954 | 0.2613 | 0.1318 | 0.4779 | IV | IV | 14 | 0.0611 | 0.3965 | 0.1570 | 0.3278 | II | II | 15 | 0.0004 | 0.1884 | 0.3260 | 0.4642 | IV | IV | 16 | 0 | 0.0958 | 0.3240 | 0.5614 | IV | IV | 17 | 0.5808 | 0.2693 | 0.0379 | 0.0005 | I | I | 18 | 0.1562 | 0.3276 | 0.1732 | 0.3278 | II ∼ III | II | 19 | 0.8189 | 0.1058 | 0.0190 | 0.0027 | I | I | 20 | 0.1152 | 0.1777 | 0.1029 | 0.4759 | IV | IV | 21 | 0.7335 | 0.2023 | 0.0390 | 0.0000 | I | I | 22 | 0.8197 | 0.1168 | 0.0328 | 0.0011 | I | I | 23 | 0.5008 | 0.0934 | 0.3299 | 0.0000 | I | I | 24 | 0.5843 | 0.0229 | 0.3362 | 0.0000 | I | I | 25 | 0.5008 | 0.0915 | 0.1426 | 0.0000 | I | I |
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