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

<div>Effects of field test of CFST arch-bolt composite scheme with arch locking bolts. (a) Monitoring curves. (b) Overall picture of the roadway 1.5 years later.</div>

Advances in Civil Engineering

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Figure 18

Figure 18: Failure Mechanism and Optimization of Arch-Bolt Composite Support for Underground Mining Tunnel 