Research Article
A Large Goaf Group Treatment by means of Mine Backfill Technology
Table 4
Statistical results of goaf volume in 848 m level.
| Stop number | Stope position | Stope span (m) | Stope height (m) | Stope thickness (m) | Exposed area of roof (m2) | Exposed perimeter of roof (m) | Goaf volume (m3) | Results of stability graph method |
| 848–1# | Of 3–5 line | 35 | 15 | 15 | 525 | 100 | 549.7 | Caving zone | 848–2# | 3–5 line | 20 | 15 | 13 | 260 | 66 | 419.8 | Caving zone | 848–3# | Of 5–7 line | 32 | 20 | 10 | 320 | 84 | 353.1 | Caving zone | 848–4# | 5–7 line | 30 | 12 | 12 | 360 | 84 | 351.9 | Caving zone | 848–5# | 7–9 line | 39 | 20 | 10 | 390 | 98 | 444.4 | Caving zone | 848–6# | 9–11 line | 42 | 20 | 7 | 294 | 98 | 287.2 | Transition zone | 848–7# | 9–11 line | 41 | 20 | 5 | 205 | 92 | 164.0 | Transition zone | 848–8# | 9–11 line | 20 | 20 | 5 | 100 | 50 | 108.3 | Transition zone | 848–9# | 11–13 line | 40 | 20 | 2 | 80 | 84 | 381.2 | Stable zone | 848–10# | 11–13 line | 40 | 20 | 8 | 320 | 96 | 95.1 | Caving zone | 848–11# | 19–21 line | 45 | 18 | 15 | 675 | 120 | 706.1 | Caving zone | 848–12# | 21–23 line | 42 | 22 | 15 | 630 | 114 | 1175.0 | Caving zone | 848–13# | 23–25 line | 40 | 30 | 5 | 200 | 90 | 405.3 | Transition zone | 848–14# | 25–27 line | 40 | 34 | 12 | 480 | 104 | 1103.6 | Caving zone | 848–15# | 27–29 line | 35 | 34 | 8 | 280 | 86 | 667.9 | Transition zone | 848–16# | 29–31 line | 35 | 34 | 8 | 280 | 86 | 616.5 | Transition zone | 848–17# | 31–33 line | 41 | 34 | 7 | 287 | 96 | 576.6 | Transition zone | 848–18# | 31–35 line | 41 | 34 | 4 | 164 | 90 | 393.4 | Transition zone | 848–19# | 35–37 line | 42 | 34 | 3 | 126 | 90 | 220.1 | Transition zone | 848–20# | 53–55 line | 30 | 4 | 58 | 1740 | 176 | 195.1 | Caving zone | 848–21# | 55–57 line | 42 | 30 | 45 | 1890 | 174 | 2408.9 | Caving zone | 848–22# | 57–59 line | 45.5 | 35 | 2.5 | 113.75 | 96 | 1255.2 | Stable zone | 848–23# | 57–59 line | 32 | 34 | 9 | 288 | 82 | 5993.7 | Transition zone | 848–24# | 61–63 line | 45.2 | 15 | 3 | 135.6 | 96.4 | 795.0 | Stable zone | 848–25# | 63–65 line | 40 | 34 | 4.5 | 180 | 89 | 4680.7 | Stable zone | 848–26# | 67–69 line | 40 | 20 | 7 | 280 | 94 | 5566.0 | Transition zone | Total | 29913.8 |
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