Quantitative Evaluation of Top Coal Caving Methods at the Working Face of Extra-Thick Coal Seams Based on the Random Medium Theory

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Serial number</td><td class="align_center">Coal caving interval</td><td class="align_center">Caving sequence of support</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Scheme 1</td><td class="align_center">7 supports</td><td class="align_center">1–7#, 4#, 2–6#, 3–5#</td></tr><tr><td class="align_left">Scheme 2</td><td class="align_center">9 supports</td><td class="align_center">7–15#, 11#, 3–7#, 2–8#, 4–6#</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Caving sequences of different coal caving methods.</div>

Advances in Civil Engineering

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Table 2

Table 2: Quantitative Evaluation of Top Coal Caving Methods at the Working Face of Extra-Thick Coal Seams Based on the Random Medium Theory 