Table 5 Abutment pressure of 50 m and 100 m in advance working face under different pressure relief states.
From: Research on process parameter optimization of irregular coal face
Advance working face distance (m) | Model | ||||||
|---|---|---|---|---|---|---|---|
Mining distance (m) | 1# | 2# | 3# | 4# | 5# | 6# | |
50 | 120 | 40.8 | 28.6 | 19.9 | 16.5 | 15.8 | 14.7 |
160 | 34.9 | 24.5 | 21.3 | 17.7 | 16.9 | 15.7 | |
200 | 34.0 | 23.8 | 12.0 | 9.9 | 9.5 | 8.7 | |
100 | 120 | 26.6 | 18.6 | 13.4 | 11.1 | 10.6 | 9.8 |
160 | 21.8 | 15.3 | 14.0 | 11.7 | 11.1 | 10.3 | |
200 | 23.6 | 16.5 | 8.3 | 6.9 | 6.5 | 6.0 | |
