Research Article
Fracturing of the Soft Rock Surrounding a Roadway Subjected to Mining at Kouzidong Coal Mine
Table 2
Macroparameter and microparameter calibration.
| | Lithology | Microparameter | Macroparameter | | Density (kg/m3) | Ec (GPa) | kn/ks | σc (MPa) | tc/σc | σu (MPa) | σt (MPa) | E (GPa) | μ | UCS/TS |
| | Coal | 1329.3 | 17.5 | 10 | 3.06 | 8.22 | 12.68 | 1.64 | 15.46 | 0.36 | 7.75 | | Mudstone | 2773 | 21.81 | 1.5 | 5.79 | 21.29 | 37.87 | 3.74 | 26.26 | 0.12 | 10.13 | | Sandstone | 2680.9 | 56 | 3.4 | 12.97 | 54.29 | 91.98 | 6.87 | 57.7 | 0.26 | 13.39 |
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