Research Article
Joint Investigation and 3D Visual Evaluation of Rock Mass Quality
Table 6
Rock mass quality rating at the sampling point of the mine.
| | Photo ID | Joint weighted spacing (cm) | Volume joint number (bar/m3) | Point load (MPa) | RQD (%) | Joint condition | Groundwater conditions | RMR score | RMR level | Rock integrity index | Uniaxial strength (MPa) | BQ score | Underground engineering rock mass quality index [BQ] | [BQ] conversion score (%) | BQ level |
| | 41.107 | 21.8 | 11.3 | 43.1 | C | Moist | 49 | III | 0.33 | 140.67 | 603.6 | 523.6 | 62.3 | II | | 27.3281 | 23.2 | 11.3 | 38.6 | B | Moist | 59 | III | 0.31 | 140.67 | 599.0 | 519.0 | 61.5 | II | | 38.6462 | 29.4 | 11.3 | 18.1 | B | Moist | 50 | III | 0.23 | 140.67 | 578.3 | 498.3 | 58.0 | II | | 37.134 | 25.2 | 8.4 | 31.7 | B | Moist | 56 | III | 0.28 | 112.16 | 506.5 | 426.5 | 46.1 | III | | | | | | | | | | | | | | | | | 53.2338 | 7.1 | 11.3 | 91.5 | B | Moist | 63 | II | 0.63 | 140.67 | 680.0 | 600.0 | 75.0 | I | | 30.4314 | 9.2 | 11.3 | 84.8 | B | Moist | 74 | II | 0.57 | 140.67 | 665.5 | 605.5 | 75.9 | I | | 28.75 | 25.8 | 11.3 | 29.7 | C | Moist | 52 | III | 0.27 | 140.67 | 590.0 | 490.0 | 56.7 | II |
|
|
