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

Figure 7

Evolution curves of (a) Scheme 6 (λ = 0.5) and (b) Scheme 10 (λ = 0.5). (A)∼(E): Evolution curves of roadway displacement, arch axial force, arch bending moment, arch supporting force, and rock bolt axial force of Scheme 6, respectively; (F)∼(J): Evolution curves of roadway displacement, arch axial force, arch bending moment, arch supporting force, and rock bolt axial force of Scheme 10, respectively.

(a)

(b)