Failure Mechanism and Optimization of Arch-Bolt Composite Support for Underground Mining Tunnel

<div>Field test of CFST arch-bolt composite scheme with arch locking bolts. (a) Supporting scheme with CFST arches and arch locking bolts. (b) Overall picture of the roadway during construction. (c) Arch locking bolt.</div>

Advances in Civil Engineering

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Figure 17

Figure 17: Failure Mechanism and Optimization of Arch-Bolt Composite Support for Underground Mining Tunnel 