Table 1 Numerical simulation scheme of working face.
From: Stress and microseismic activity in hard roof thick coal seams under varying mining rates
Goaf | Stress release rate(%) | Single excavation volume(m) | Excavation times | Total excavation volume (m) | Mining rate level |
|---|---|---|---|---|---|
One-side Goaf | 25 | 12 | 4 | 48 | High speed |
50 | Medium-high speed | ||||
75 | Low speed | ||||
100 | Slow speed |
