Evaluation of the Water Yield of Coal Roof Aquifers Based on the FDAHP-Entropy Method: A Case Study in the Donghuantuo Coal Mine, China

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Partition code</td><td class="align_center">Water yield zone</td><td class="align_center">WI value by the FDAHP</td><td class="align_center">WI value by the EWM</td><td class="align_center">WI value by the CWM</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Zone I</td><td class="align_center">Poor</td><td class="align_center">0.1549-0.2693</td><td class="align_center">0.1131-0.2232</td><td class="align_center">0.1357-0.2436</td></tr><tr><td class="align_left">Zone II</td><td class="align_center">Medium</td><td class="align_center">0.2694-0.3638</td><td class="align_center">0.2233-0.2966</td><td class="align_center">0.2437-0.3229</td></tr><tr><td class="align_left">Zone III</td><td class="align_center">Rich</td><td class="align_center">0.3639-0.4628</td><td class="align_center">0.2967-0.3794</td><td class="align_center">0.3230-0.4085</td></tr><tr><td class="align_left">Zone IV</td><td class="align_center">Richer</td><td class="align_center">Greater than 0.4628</td><td class="align_center">Greater than 0.3794</td><td class="align_center">Greater than 0.4085</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Classification thresholds of WI values by the FDAHP, EWM, and CWM.</div>

Geofluids

tab6

Table 6

Table 6: Evaluation of the Water Yield of Coal Roof Aquifers Based on the FDAHP-Entropy Method: A Case Study in the Donghuantuo Coal Mine, China 