Research on Formation Mechanism and Evolution Pattern of Bed Separation Zone during Repeated Mining in Multiple Coal Seams

<div>Variation pattern of bed separation clearance ((a)–(c) are the bed separation interval when mining coal 1, coal 2, and coal 3, respectively).</div>

Geofluids

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Figure 9

Figure 9: Research on Formation Mechanism and Evolution Pattern of Bed Separation Zone during Repeated Mining in Multiple Coal Seams 