Effect of Mining Thickness on Overburden Movement and Underground Pressure Characteristics for Extrathick Coal Seam by Sublevel Caving with High Bottom Cutting Height

<div>Some typical roof collapse of mining caving in coal with a thickness of 25 m. (a) 144 m; (b) 200 m.</div>

Advances in Civil Engineering

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Figure 6

Figure 6: Effect of Mining Thickness on Overburden Movement and Underground Pressure Characteristics for Extrathick Coal Seam by Sublevel Caving with High Bottom Cutting Height 

Figure 6 | Effect of Mining Thickness on Overburden Movement and Underground Pressure Characteristics for Extrathick Coal Seam by Sublevel Caving with High Bottom Cutting Height 