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

<div>The temporal and spatial evolution pattern of bed separation zone of mining different coal seams. ((a)–(c) are the temporal and spatial evolution pattern when mining coal 1, coal 2, and coal 3, respectively).</div>

Geofluids

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Figure 7

Figure 7: Research on Formation Mechanism and Evolution Pattern of Bed Separation Zone during Repeated Mining in Multiple Coal Seams 