Research Article
Quantitative Characterization of Overburden Rock Development Pattern in the Goaf at Different Key Stratum Locations Based on DEM
Table 5
The key stratum positions of each experimental scheme.
| Scheme | Scheme 1 | Scheme 2 | Scheme 3 |
| Coal seam | Height mining | 6 | 6 | 6 | Inferior key stratum 1 | Thickness | 6.7 | 6.7 | 6.7 | Thickness from coal seam | 9.7 | 9.7 | 9.7 | Inferior key stratum 2 | Thickness | 7.2 | 7.2 | — | Thickness from coal seam | 21.9 | 21.9 | — | Inferior key stratum 3 | Thickness | 11.1 | — | — | Thickness from coal seam | 43 | — | — | Compound key stratum | Thickness | 15.2 | — | 15.2 | Thickness from coal seam | 58.2 | — | 69.9 | Main key stratum | Thickness | 11.4 | 11.4 | 11.4 | Thickness from coal seam | 94.6 | 54.4 | 26.1 |
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