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

<div>Cloud diagram of vertical stress distribution (inclination 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 3

Figure 3: Research on the Rock Pressure Behavior at Close-Distance Island Working Faces under Deep Goaf 