Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam Floors

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Lithology</td><td class="align_center">Conversion value of equivalent water resistance coefficient</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Mudstone, marl, clay, shale</td><td class="align_center">1.0</td></tr><tr><td class="align_left">Sandstone</td><td class="align_center">0.4</td></tr><tr><td class="align_left">Sand shale</td><td class="align_center">0.8</td></tr><tr><td class="align_left">Mine</td><td class="align_center">0.7</td></tr><tr><td class="align_left">Gravel, gravel, etc.</td><td class="align_center">0</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Conversion value of the lithology equivalent water resistance coefficient.</div>

Geofluids

tab5

Table 5

Table 5: Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam Floors 