A Study on the Energy Condition and Quantitative Analysis of the Occurrence of a Coal and Gas Outburst

<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">Category</td><td class="align_center">Material</td><td class="align_center">Size fraction</td><td class="align_center">Remarks</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Grouting agent</td><td class="align_center">Cement</td><td class="align_center">425<sup>#</sup> ordinary Portland cement</td><td class="align_center">—</td></tr><tr><td class="align_left">Skeletal material</td><td class="align_center">Crushed coal</td><td class="align_center">80∼40 mesh, 40∼20 mesh</td><td class="align_center">Outburst coal seam</td></tr><tr><td class="align_left" rowspan="3">Auxiliary material</td><td class="align_center">Sand</td><td class="align_center">40∼20 mesh</td><td class="align_center">River sand</td></tr><tr><td class="align_center">Activated carbon</td><td class="align_center">Φ2.6 mm × 5.6 mm</td><td class="align_center">Granule</td></tr><tr><td class="align_center">Water</td><td class="align_center">—</td><td class="align_center">Ordinary tap water</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Raw materials of similar material for coal and gas outburst similar simulation test.</div>

Shock and Vibration

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Table 1

Table 1: A Study on the Energy Condition and Quantitative Analysis of the Occurrence of a Coal and Gas Outburst 