Influencing Factor Analysis on the Anomalously Low-Friction Effect in the Block Rock Mass

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">Roof</td><td class="align_center">Working block</td><td class="align_center">Bottom</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Combination 1: mudstone + sandstone + sandstone</td><td class="align_center">Mudstone</td><td class="align_center">Sandstone</td><td class="align_center">Sandstone</td></tr><tr><td class="align_left">Combination 2: sandstone + coal + sandstone</td><td class="align_center">Sandstone</td><td class="align_center">Coal</td><td class="align_center">Sandstone</td></tr><tr><td class="align_left">Combination 3: sandstone + sandstone + mudstone</td><td class="align_center">Sandstone</td><td class="align_center">Sandstone</td><td class="align_center">Mudstone</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Combination modes of block lithology.</div>

Advances in Civil Engineering

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Table 3

Table 3: Influencing Factor Analysis on the Anomalously Low-Friction Effect in the Block Rock Mass 