Use of the Equivalent Mining Height Method for Understanding Overlying Strata Movement and Stress Distribution in an Isolated Coal Pillar

<div>Vertical displacement of overlying strata after mining. (a) Plot of roof subsiding at 20 m above coal seam. (b) Plot of roof subsiding at 40 m above coal seam. (c) Plot of roof subsiding at 60 m above coal seam. (d) Plot of roof subsiding at 80 m above coal seam.</div>

Shock and Vibration

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Figure 7

Figure 7: Use of the Equivalent Mining Height Method for Understanding Overlying Strata Movement and Stress Distribution in an Isolated Coal Pillar 