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

<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"> </td><td class="align_center">Single lithology: all blocks are sandstone</td><td class="align_center">Combination 1: mudstone + sandstone + sandstone</td><td class="align_center">Combination 2: sandstone + coal + sandstone</td><td class="align_center">Combination 3: sandstone + sandstone + mudstone</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Minimum normal force (N)</td><td class="align_center">106.2</td><td class="align_center">81.5</td><td class="align_center">73.1</td><td class="align_center">87.2</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Minimum normal force on the contact surface under different lithology.</div>

Advances in Civil Engineering

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Table 8

Table 8: Influencing Factor Analysis on the Anomalously Low-Friction Effect in the Block Rock Mass 