Research on the Influence of Mining Height on the Movement Characteristics of Overlying Strata during Extremely Thick Coal Seam Fully Mechanized Sublevel Caving Mining

<div>Distribution histogram of powered support working resistance. (a) 4.0 m mining height. (b) 7.5 m mining height.</div>

Advances in Civil Engineering

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Figure 4

Figure 4: Research on the Influence of Mining Height on the Movement Characteristics of Overlying Strata during Extremely Thick Coal Seam Fully Mechanized Sublevel Caving Mining 

Figure 4 | Research on the Influence of Mining Height on the Movement Characteristics of Overlying Strata during Extremely Thick Coal Seam Fully Mechanized Sublevel Caving Mining 