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

<div>Variation curves of displacements and plastic zone volumes with lateral ground stress. (The results of Scheme 5 (ground stress 20 MPa) are not shown in the curves because of an interruption in the calculation.)</div>

Advances in Civil Engineering

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Figure 6

Figure 6: Failure Mechanism and Optimization of Arch-Bolt Composite Support for Underground Mining Tunnel 