Research Article
Quantitative Characterization of Overburden Rock Development Pattern in the Goaf at Different Key Stratum Locations Based on DEM
Table 4
Results of uniaxial compressive strength of partially tested rock.
| Layer number | Lithology | Single axis compressive strength/MPa | Theoretical value of materials | Empirical value/kPa | Error/% |
| J12 | Medium grain sandstone | 48.93 | 215.29 | 214.06 | 0.57 | J11 | Mudstone | 42.15 | 185.46 | 187.53 | 1.10 | J10 | Sandy mudstone | 56.43 | 248.29 | 251.34 | 1.21 | J9 | Mudstone | 51.73 | 227.70 | 222.03 | 2.55 | J8 | Post office box stone | 75.11 | 330.48 | 327.85 | 0.80 | J7 | Mudstone | 32.09 | 141.19 | 141.53 | 0.23 | J6 | Medium grain sandstone | 33.48 | 147.31 | 146.12 | 0.81 | J5 | Sandy mudstone | 27.15 | 119.46 | 117.7 | 1.49 | J4 | Medium grain sandstone | 30.07 | 132.30 | 133.07 | 0.57 | J3 | Sandy mudstone | 23.23 | 102.21 | 99.00 | 3.24 |
|
|