Table 1
Simulated and measured stress data of key areas of hydraulic support.
| Location | Coordinates (x,y,z) (m) | Simulated value (MPa) | Measured mean± SD (MPa) | Deviation (%) | Stress concentration factor K_t |
| Column-roof weld seam | (1.20, 0.80, 2.30) | 583 | 562 ± 15 | 3.7 | 2.85 |
| Shield beam lug hole | (0.75, 1.05, 1.60) | 498 | 513 ± 22 | −2.9 | 2.32 |
| Base hydraulic cylinder mount | (0.30, 0.40, 0.20) | 436 | 448 ± 18 | −2.7 | 1.98 |
| Link pin hole | (0.95, 0.65, 1.10) | 371 | 385 ± 14 | −3.6 | 1.68 |
| Balance jack hinge point | (0.60, 0.90, 1.80) | 302 | 293 ± 12 | 3.1 | 1.37 |
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