Study on the Strata Movement Rule of the Ultrathick and Weak Cementation Overburden in Deep Mining by Similar Material Simulation: A Case Study in China

Figure 7

Failure characteristics and movement rule of the overburden when the working face 2201 was mined. (a) Failure characteristics of the overburden when the working face 2201 was 120 m in width. (b) Failure characteristics of the overburden when the working face 2201 was 180 m in width. (c) Failure characteristics of the overburden when the working face 2201 was 240 m in width. (d) Movement rule of the overburden when the working face 2201 was 240 m in width. (e) Failure characteristics of the overburden when the working face 2201 was 300 m in width. (f) Movement rule of the overburden when the working face 2201 was 300 m in width.

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