Study on Reasonable Layout of Upper Protective Layer for Prevention Rock Burst under Coal Seam Group with Close Quarters Conditions

<div>The vertical stress distribution behaviors of cross section after optimizing the layout scheme during stage II. (a) The mining face of panel 3203 is 0 m away from boundary line; (b) the mining face of panel 3203 is 90 m away from boundary line.</div>

Shock and Vibration

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Figure 15

Figure 15: Study on Reasonable Layout of Upper Protective Layer for Prevention Rock Burst under Coal Seam Group with Close Quarters Conditions 