Large-Deformation Failure Mechanism of Coal-Feeder Chamber and Construction of Wall-Mounted Coal Bunker in Underground Coal Mine with Soft, Swelling Floor Rocks

Figure 17

Construction procedures. (a) Installation of the bolt-mesh-cable system and the self-designed H-steel beams during stepwise excavation of the rocks, (b) installation of the self-designed H-steel brackets, (c) installation of the self-locking anchor cables, (d) fitting the bottom parts of H-steel brackets together to form the skeleton of the coal hopper, (e) configuring rebars around the bunker, (f) pouring concrete and (g) that was vibrated to remove any entrapped air bubbles, and (h) installation of related components at the top of the bunker.

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