Study of Instability Mechanism and Roof Caving Mode of Cementing Filling Stope: The Case Study of a Nonferrous Metal Mine in China

Figure 16

Illustrations of instability process of the pillars and roof. Left: The failure and fracture development of the model. Right: The contact force chain of the model (blue represents pressure and red represents tension). (a)–(b) The 1 drift is excavated; (c)–(d) The 2 drift is excavated; (e)–(f) The 3 drift is excavated; (g)–(h) The 4 drift is excavated; (i)–(j) The 5 drift is excavated; (k)–(l) The 6 drift is excavated.

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