A Supporting Design Method When Longwall FaceStrides across and Passes through a Roadway

<div><i>z</i>-displacement of PTR section. (a) <i>z</i>-displacement of PTR section with backfilling. (b) <i>z</i>-displacement of PTR section without backfilling.</div>

Advances in Materials Science and Engineering

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Figure 12

Figure 12: A Supporting Design Method When Longwall FaceStrides across and Passes through a Roadway 