| 煤层倾角 | 卸压角ð | |||
| ð1 | ð2 | ð3 | ð4 | |
| 0 | 80 | 80 | 75 | 75 |
| 10 | 77 | 83 | 75 | 75 |
| 20 | 73 | 87 | 75 | 75 |
| 30 | 69 | 90 | 75 | 70 |