Research Article
Stability Analysis and Fracture Patterns of Hard Main Roof in Longwall Top Coal Caving with Large Mining Height
Table 5
Comparison of underground pressure in the middle of No. 8105 and 8100 longwall face [
27].
| Longwall face number | 8100 | 8105 |
| Working resistance during weighting (kN) | Value distribution interval | 10000–14000 | 8000–13000 | Average value | 12805.6 | 10895.7 |
| Periodic weighting interval/m | Value distribution interval | 11.48–44.6 | 9.6–36.6 | Average value | 29.4 | 24.8 |
|
|