Combined Early Warning Method for Rock Burst and Its Engineering Application

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Drilling depth/mining thickness of coal seam (<i>Q</i>)</td><td class="align_center">1.5</td><td class="align_center">1.5∼3.0</td><td class="align_center">3.0</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Drilling cuttings index (<i>K</i>)</td><td class="align_center">≥1.5</td><td class="align_center">2.0∼3.0</td><td class="align_center">≥4.0</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Warning index of drilling cuttings for judging rock burst.</div>

Advances in Civil Engineering

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Table 1

Table 1: Combined Early Warning Method for Rock Burst and Its Engineering Application 