Research on the Rock Pressure Behavior at Close-Distance Island Working Faces under Deep Goaf

<div>Vertical stress distribution cloud diagram (alignment direction): (a) the working face advances 80 m, (b) the working face advances 130 m, (c) the working face advances 180 m, and (d) the working face advances 240 m.</div>

Advances in Civil Engineering

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Figure 4

Figure 4: Research on the Rock Pressure Behavior at Close-Distance Island Working Faces under Deep Goaf 