Research on the Influence of the Key Stratum Position on the Support Working Resistance during Large Mining Height Top-Coal Caving Mining

<div>The characteristics of rock collapse with different interlayer thickness when the working face advances 100 m. (a) Thickness of interlayer strata is 60 m. (b) Thickness of interlayer strata is 35 m. (c) Thickness of interlayer strata is 15 m.</div>

Advances in Civil Engineering

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Figure 2

Figure 2: Research on the Influence of the Key Stratum Position on the Support Working Resistance during Large Mining Height Top-Coal Caving Mining 