Table 7 Rock mechanics parameters of numerical models.
Stratum | Bulk (Mpa) | Shear (Mpa) | Cohesion (Mpa) | Friction (\(^\circ\)) | Tension (Mpa) | Density(kg/m3) |
|---|---|---|---|---|---|---|
Epipedon | 267 | 123 | 0.16 | 20 | 0.01 | 1870 |
Clayey sand | 292 | 135 | 0.16 | 20 | 0.01 | 1980 |
1st clay layer | 325 | 150 | 0.16 | 20 | 0.01 | 1950 |
1st sand layer | 341 | 176 | 0.17 | 20 | 0.01 | 2050 |
2nd clay layer | 350 | 162 | 0.17 | 20 | 0.01 | 2040 |
2nd sand layer | 591 | 305 | 0.18 | 20 | 0.01 | 2080 |
3rd clay layer | 600 | 277 | 0.18 | 20 | 0.01 | 2050 |
3rd sand layer | 667 | 344 | 0.20 | 20 | 0.01 | 2110 |
Gabbro | 1833 | 1375 | 2.15 | 32 | 1.12 | 2450 |
Fine sandstone | 1956 | 1467 | 1.90 | 31 | 1.23 | 2433 |
Muddy fine sandstone | 1978 | 1546 | 2.04 | 32 | 1.21 | 2400 |
Gravel fine sandstone | 1856 | 1392 | 2.25 | 33 | 1.32 | 2441 |
Sand-mud interbed | 1979 | 1610 | 2.02 | 33 | 1.44 | 2383 |
Medium sandstone | 1711 | 1283 | 1.75 | 32 | 1.14 | 2495 |
Coal | 1071 | 738 | 1.22 | 30 | 0.85 | 1500 |
Mudstone (floor) | 3422 | 2567 | 3.02 | 33 | 2.22 | 2467 |
