Research Article
Research on Deformation Mechanism of Retracement Channel during Fully Mechanized Caving Mining in Superhigh Seam
| | | Bolt | Anchor cable | Spacing between bolts | Spacing between anchor cables | Bolt material | Anchor cable material |
| | Scheme 1 | Positive working slope: Φ20 × 2400 | Φ17.8 × 8000 | Positive working slope: 1000 × 1000 | 1750 × 3000 | Equal strength thread steel | Steel strand | | Side working slope: Φ20 × 2400 | Side working slope: 1000 × 900 | Equal strength thread steel | | Roof: Φ20 × 2400 | Roof: 1000 × 1000 | Equal strength thread steel |
| | Scheme 2 | Positive working slope: Φ20 × 2400 | Φ17.8×8000 | Positive working slope: 900 × 900 | 1750 × 2700 | Equal strength thread steel | Steel strand | | Side working slope: Φ20 × 2400 | Side working slope: 900×900 | Equal strength thread steel | | Roof: Φ22 × 2500 | Roof: 1000 × 900 | Equal strength thread steel |
| | Scheme 3 | Positive working slope: Φ20 × 2400 | Φ17.8×8000 | Positive working slope: 800 × 900 | 1750 × 2700 | Equal strength thread steel | Steel strand | | Side working slope: Φ20 × 2400 | Side working slope: 800 × 900 | Equal strength thread steel | | Roof: Φ22 × 2500 | Roof: 1000 × 900 | Equal strength thread steel |
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