Research Article
Mechanism and Integrated Control of “Rib Spalling: Roof Collapse—Support Instability” Hazard Chains in Steeply Dipping Soft Coal Seams
Table 1
Programs and parameters of the flexible support technique [
40].
| Program | Bore diameter, cm | Hole depth, m | Angle, ° | Spacing, m | Distance from the floor, m | Coir rope diameter, cm |
| Normal region | 42 | 8 | 40 | 4 | 2.6 | 25 | Tectonic region | 28 | 6 | 502 | 2 | 1.8 | 15 | Complex region | 76 | 30 | 3-4 | 4 | 2 | 30 |
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