Failure Analysis of Deep Composite Roof Roadway and Support Optimization of Anchor Cable Parameters

Figure 10

Anchor cable support stress nephogram.

(a) Vertical stress at 2 m above the original supporting roof

(b) Vertical stress of roadway profile under original support

(c) Vertical stress at 2 m above reinforced supporting roof

(d) Vertical stress of roadway profile under reinforced support

(e) Vertical stress at 2 m above the optimized supporting roof

(f) Vertical stress of roadway profile under optimized support