Research on the Evolution Characteristics of Rock Mass Response from Open-Pit to Underground Mining

<div>The failure characteristics of the overlying rock mass at the stage of recovering the pillars. (a) Recover pillar #3 and pillar #4; (b) recover the continuous pillar #2.</div>

Advances in Materials Science and Engineering

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Figure 7

Figure 7: Research on the Evolution Characteristics of Rock Mass Response from Open-Pit to Underground Mining 