Research and Application of Prefilled Concrete Wall to Reduce the Size of Stopping Mining Coal Pillar

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Schemes</td><td class="align_center">Width of filling body/m</td><td class="align_center">Width of remaining coal pillar/m</td><td class="align_center">Width of stopping mining coal pillar/m</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">0</td><td class="align_center">25</td><td class="align_center">25</td></tr><tr><td class="align_left">2</td><td class="align_center">4</td><td class="align_center">21</td><td class="align_center">25</td></tr><tr><td class="align_left">3</td><td class="align_center">5</td><td class="align_center">20</td><td class="align_center">25</td></tr><tr><td class="align_left">4</td><td class="align_center">6</td><td class="align_center">19</td><td class="align_center">25</td></tr><tr><td class="align_left">5</td><td class="align_center">7</td><td class="align_center">18</td><td class="align_center">25</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The scheme of replacing partial stopping mining coal pillar with concrete filling body.</div>

Geofluids

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Table 4

Table 4: Research and Application of Prefilled Concrete Wall to Reduce the Size of Stopping Mining Coal Pillar 