Research Article
Vulnerability Analysis of Soft Caving Tunnel Support System and Surrounding Rock Optimal Control Technology Research
Table 18
Summary of the vulnerability of mine tunnel.
| | | Vulnerability indicators of tunnel’s supporting systems | Vulnerability | | | A | B | C | D | E | F | G | H | I | J | K | | Vulnerability grade |
| Mine name | Xian Dewang mine | 30.57 | 25.37 | 5.45 | 12.6 | 460 | II | 5 | 7.33 | 0.361 | 27 | 31 | 6.628 | Higher | Gu Shuyuan mine | 75.6 | 105.35 | 17.79 | 11.25 | 210 | I | 30 | 0.7 | 0.036 | 2 | 8 | 4.946 | Lower | Yang Quan 1#mine | 44 | 33 | 15.4 | 10.5 | 370 | II | ≥50 | 5.27 | 0.403 | 15 | 25 | 5.158 | Lower | Xia Gou mine | 37 | 30 | 16.9 | 10.3 | 350 | I | 10 | 10 | 0.194 | 23 | 36 | 7.464 | Highest | Chang Cun mine | 12 | 51.3 | 13.3 | 14.07 | 400 | II | ≥50 | 7.15 | 0.438 | 8 | 19 | 4.78 | Lower | Si He mine | 68 | 75.56 | 21.9 | 19.25 | 400 | IV | 15 | 5.3 | 0.289 | 9 | 8 | 5.144 | Lower | Dong Tan mine | 28 | 38 | 17.5 | 14.5 | 560 | II | 2 | 6.05 | 0.308 | 17 | 15 | 5.564 | Moderate | Xiao Kang mine | 8 | 17.6 | 14.2 | 10.2 | 525 | II | ≥50 | 5.4 | 0.356 | 70 | 35 | 6.912 | Higher |
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A: integrity of surrounding rock; B: roof rock strength; C: coal strength; D: tunnel’s section size; E: depth of tunnel; F: geological structure; G: impact of coal pillar; H: thickness of strengthened rock; I: tunnel support strength; J: tunnel’s repair rate; K: construction quality coefficient.
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