Research Article
Subsidence Prediction of Overburden Strata and Surface Based on the Voussoir Beam Structure Theory
Table 1
Strata thickness and KS location.
| Thickness (m) | Depth (m) | Lithology | KS judgement | Limit span (m) |
| 10 | 10 | Topsoil | | | 20 | 30 | Medium-grained sandstone | | | 60 | 90 | Sandy conglomerate | PKS | 50.001 | 10 | 100 | Sandy mudstone | | | 10 | 110 | Coarse-grained sandstone | | | 10 | 120 | Fine-grained sandstone | | | 10 | 130 | Medium-grained sandstone | | | 15 | 145 | Coarse-grained sandstone | | 23.341 | 10 | 155 | Fine-grained sandstone | SKS | 40 | 5 | 160 | Mudstone | | | 10 | 170 | Fine-grained sandstone | SKS | 16.976 | 5 | 175 | Siltstone | | | 4.9 | 179.9 | Coal seam | | |
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