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Details of the effects of karst thickness.
| Case | L | R | U | B | Thickness of karst (B–U)/m | Width of karst (R–L)/m |
|---|---|---|---|---|---|---|
| 1 | − 38 | 52 | 0 | 0 | 0 | 0 |
| 2 | 1 | 2, 3, 4…21 | 1 ~ 20 | 90 | ||
| 3 | 2 | 3, 4, 5…22 | 1 ~ 20 | 90 | ||
| 4 | 3 | 4, 5, 6…23 | 1 ~ 20 | 90 | ||
| 5 | 5 | 6, 7, 8…25 | 1 ~ 20 | 90 | ||
| 6 | 10 | 11, 12…30 | 1 ~ 20 | 90 | ||
| 7 | 15 | 16, 17…35 | 1 ~ 20 | 90 | ||
| 8 | 20 | 21, 22…40 | 1 ~ 20 | 90 | ||
| 9 | 0 | 14 | 3 | 4, 5…43 | 1 ~ 40 | 14 |
| 10 | 5 | 6, 7…45 | 1 ~ 40 | 14 | ||
| 11 | 10 | 11, 12…50 | 1 ~ 40 | 14 | ||
| 12 | 15 | 16, 17…55 | 1 ~ 40 | 14 |
