Table 6 Peak stress of different working face mining speed (MPa).
From: Research on process parameter optimization of irregular coal face
Mining speed (m/day) | Mining distance | ||||
|---|---|---|---|---|---|
12 m | 24 m | 36 m | 48 m | 60 m | |
2.0 | 30.7 | 34.7 | 35.7 | 38.4 | 39.6 |
3.0 | 31.4 | 34.7 | 37.5 | 36.7 | 39 |
4.0 | 42.9 | 47.5 | 51.3 | 50.2 | 53.4 |
6.0 | 56.5 | 62.5 | 67.5 | 66.0 | 70.2 |
