Table 2.
Sample data.
| Number | Working face | H (m) | Rc (MPa) | mj (m) | M (m) | DN | k | Grade |
|---|---|---|---|---|---|---|---|---|
| 1 | Micun Mine 21 | 300 | 14 | 0 | 8 | 10.05 | 1 | II |
| 2 | Zhangshuanglou Mine | 600 | 14.6 | 0.3 | 4.5 | 18 | 1.25 | II |
| 3 | Xinzhuang Mine 3# | 175 | 10 | 0 | 7 | 13.02 | 0.78 | II |
| 4 | Dongliang Mine 2–4# | 300 | 16 | 0.3 | 12.5 | 14.8 | 1.14 | III |
| 5 | Ciyaogou Mine 11,101 | 201 | 28.53 | 0.41 | 4.93 | 1.44 | 1.44 | IV |
| 6 | Xuecun 2# | 300 | 16 | 0.4 | 14.5 | 15.2 | 0.36 | III |
| 7 | Yaoqiao 3# | 193 | 25 | 0.3 | 6.7 | 7.5 | 0.71 | IV |
| 8 | Pingdingshan Mine E-15# | 300 | 14 | 0 | 7.9 | 12.09 | 1.16 | II |
| 9 | Shanxi X Coal Mine 8301–5# | 484 | 24 | 0.26 | 6.39 | 9 | 1.4 | IV |
| 10 | Jiaojiazhai 5# | 140 | 2.8 | 0 | 6.5 | 14.71 | 1.2 | II |
| 11 | Shanxi X Mine 8101–8 + 10# | 273 | 13.8 | 0.3 | 9 | 12 | 2.3 | III |
| 12 | Nantun Mine 5# | 400 | 15 | 0.2 | 3.2 | 10.22 | 0.78 | II |
| 13 | Xiangshan Mine 5# | 230 | 8.5 | 0 | 5.5 | 16.08 | 0.72 | II |
| 14 | Mengying Mine 15# | 220 | 8.5 | 0 | 6.3 | 10.65 | 0.82 | I |
| 15 | Xieqiao 13–1# | 357 | 10 | 0.12 | 12 | 14 | 2.44 | II |
| 16 | Xinglongzhuang Mine 3# | 413 | 13.74 | 0.3 | 7.8 | 12.88 | 0.58 | II |
| 17 | Singareni Coal Mine 3# | 350 | 25.5 | 0.1 | 7 | 10.22 | 0.88 | II |
| 18 | Liujialiang Mine 5# | 140 | 2.8 | 0 | 6 | 19.4 | 1.2 | I |
| 19 | Madigou Mine 13# | 117 | 15.78 | 0.6 | 14.79 | 10.35 | 1.04 | III |
| 20 | Lingwu Mine 2# | 200 | 15 | 0 | 10.28 | 8.84 | 0.83 | IV |
| 21 | Wangzhuang Mine | 250 | 25 | 0.2 | 6.5 | 2 | 1.28 | II |
| 22 | Shanxi X Mine 8101–5# | 240 | 13.8 | 0.45 | 7.43 | 12.4 | 0.61 | III |
| 23 | Dalong Mine 5# | 160 | 5 | 0 | 8.4 | 16 | 0.73 | II |
| 24 | Yuanzigou Mine 1,012,001 | 780 | 18 | 0.2 | 8.25 | 10.22 | 0.94 | II |
| 25 | Gaozhuang Mine 4–17# | 240 | 20 | 0.2 | 5.5 | 8.6 | 0.4 | II |
| 26 | Puhe Mine (Lignite) | 357 | 10 | 0.12 | 12 | 14 | 2.44 | II |
| 27 | Changcun Mine | 350 | 20 | 0.3 | 6.7 | 2 | 1.23 | II |
| 28 | Anlin Coal Mine 28,071–2# | 365 | 13.58 | 0 | 5.06 | 3 | 2.6 | III |
| 29 | Baodian Mine 3# | 435 | 16.6 | 0 | 8.8 | 9.23 | 0.52 | II |
| 30 | Tangan Mine 3# | 200 | 15 | 0.3 | 6.5 | 13.82 | 0.81 | II |
| 31 | Xingtai Mine 2# | 360 | 20 | 0.4 | 6.2 | 8.3 | 0.41 | III |
| 32 | Phoenix Mountain Mine 3# | 140 | 35 | 0.1 | 5.5 | 8.01 | 0.62 | IV |
| 33 | Yangquan Fourth Mine 15# | 193 | 25 | 0.1 | 6.7 | 7.5 | 0.71 | III |
| 34 | Purcell Fourth Mine B901 | 230 | 19 | 0.27 | 9.74 | 10.35 | 1.04 | III |
| 35 | Shuiyu Mine 10# | 190 | 6.5 | 0 | 7.2 | 15.77 | 1.44 | I |
| 36 | Nanshan Mine 18# | 150 | 10 | 0.4 | 12.2 | 11.2 | 1.34 | III |
| 37 | Kangjiatan Mine 88,203–8# | 264 | 20 | 0.15 | 7.46 | 10.35 | 1.04 | III |
| 38 | Yangquan No.1 Mine 15# | 250 | 20 | 0.3 | 6 | 8.01 | 1.91 | III |
| 39 | Cuijiagou 4–2# | 262 | 17.5 | 0.05 | 5.85 | 9.5 | 1.78 | II |
| 40 | Dayan Second Mine 3# | 435 | 16.6 | 0 | 8.8 | 9.23 | 0.52 | II |
| 41 | Xinzhouyao Mine 11# | 300 | 30 | 0.4 | 8.6 | 9.85 | 0.25 | IV |
| 42 | Wangpo Coal 3208–3# | 650 | 18 | 0 | 5.1 | 10.22 | 0.94 | II |
| 43 | Xinglongcun 4316 | 357 | 13.34 | 0.05 | 8.11 | 10.22 | 0.41 | II |
| 44 | Tao Second Mine 2# | 290 | 6.5 | 0.2 | 7.2 | 15.77 | 1.44 | I |
| 45 | Wulong Mine 214# | 300 | 16 | 0.4 | 14.5 | 15.2 | 0.36 | III |
| 46 | Gucheng Coal Mine 3# | 610 | 10.66 | 0.17 | 6.33 | 10.22 | 0.94 | II |
| 47 | Xiashi Festival 4–2# | 177 | 17.5 | 0 | 12 | 9.1 | 0.17 | III |
| 48 | Chaohua Coal Mine 2# | 413 | 13.74 | 0.3 | 7.8 | 12.88 | 0.58 | II |
| 49 | Dayang Coal Mine 3404–3# | 432 | 10.08 | 0.58 | 5.72 | 1.04 | 0.94 | II |
| 50 | Longgu Coal Mine 7201 | 580 | 15.2 | 0.17 | 6 | 15.77 | 1.1 | I |
| 51 | Panjin Coal Mine 2301 | 220 | 13.3 | 0.6 | 17.03 | 10.22 | 0.94 | II |
| 52 | Jialequan Mine 2–4# | 128 | 10 | 0.52 | 8.2 | 9.11 | 0.56 | IV |
| 53 | Gongwusu Coal Mine 1604 | 286 | 9.5 | 0.58 | 8.5 | 10.22 | 1.23 | II |
| 54 | Zhaozhuang 2–1304# | 440 | 14.03 | 0.19 | 5.36 | 11.98 | 0.44 | II |
| 55 | Xinji Mine 13# | 450 | 8 | 0.3 | 7.2 | 15.77 | 0.43 | I |
| 56 | Yongan Mine 3# | 200 | 5.7 | 0.2 | 6.5 | 17 | 0.6 | IV |
| 57 | Wangjiazhuang Mine 3# | 200 | 16 | 0 | 7 | 7.43 | 0.56 | III |
| 58 | Zhangcun Mine | 230 | 20 | 0.2 | 7 | 2 | 0.68 | II |
| 59 | Hemei No.3 Mine | 750 | 16.5 | 0.3 | 8 | 10.22 | 0.33 | II |
| 60 | Xuzhou Qishan 3# | 300 | 14 | 0 | 8 | 10.1 | 1 | II |
*Data comes from the database of published papers on CNKI.