Research Article
Ground Subsidence Evolution from 1000 m Deep Mining: A Case Study in Fengfeng Mining Area
Table 2
Angular parameters at different mining depths in Fengfeng mining area.
| | Category | Name of observatory | Mining depth (m) | Comprehensive boundary angle (°) | Comprehensive moving angle (°) | | δ0 | β0 | γ0 | δ | Β | γ |
| | H ≤ 400 m | — | 90∼400 | 58 | 58–0.3α | 58 | 74 | 74–0.6α | 63 + α |
| | 400 m ＜ H ≤ 700 m | A-801 | 393∼426 | 62.2 | 51.3 | — | — | 75.4 | — | | B-403, 407 | 477∼517 | 71 | — | — | — | — | — | | C-102 | 600 | — | 60 | — | — | 78.5 | 76.5 | | D-161, 164 | 540∼670 | 57.8 | 64.6 | 53.5 | 73.2 | 80.0 | — | | E-226N | 695 | — | 68.9 | 69.6 | — | — | — |
| | 700 m ＜ H ≤ 1000 m | F-266 | 712∼790 | 71.8 | 64.9 | — | — | — | — | | F-235 | 705∼816 | — | — | — | 95.3 | — | — | | G-157 | 827∼930 | 56.5 | 61.2 | — | — | 89.3 | — |
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