Study on Overburden Stability and Development Height of Water Flowing Fractured Zone in Roadway Mining with Cemented Backfill

<table class="table-group" id="tab8"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Height of water flowing fractured zone</td><td class="align_center">Thickness of protective layer</td><td class="align_center">Thickness of bedrock weathering zone</td><td class="align_center">Required thickness of waterproof coal-rock pillar</td><td class="align_center">Distance from aquifer floor to coal seam roof</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">32.5</td><td class="align_center">1.8</td><td class="align_center">5</td><td class="align_center">39.8</td><td class="align_center">111</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Calculation of the waterproof coal-rock pillar, unit: m.</div>

Shock and Vibration

tab8

Table 8

Table 8: Study on Overburden Stability and Development Height of Water Flowing Fractured Zone in Roadway Mining with Cemented Backfill 