Evaluation on the Stability of Vertical Mine Shafts below Thick Loose Strata Based on the Comprehensive Weight Method and a Fuzzy Matter-Element Analysis Model

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Construction method and shaft lining type</td><td class="align_center">Safe</td><td class="align_center">Safer</td><td class="align_center">Critically safe</td><td class="align_center">Dangerous</td><td class="align_center">Extremely dangerous</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">Assignment</td><td class="align_center">0~0.2</td><td class="align_center">0.2~0.4</td><td class="align_center">0.4~0.6</td><td class="align_center">0.6~0.8</td><td class="align_center">0.8~1</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Influencing effect assignment of the construction method and shaft wall type.</div>

Geofluids

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Table 4

Table 4: Evaluation on the Stability of Vertical Mine Shafts below Thick Loose Strata Based on the Comprehensive Weight Method and a Fuzzy Matter-Element Analysis Model 

Table 4 | Evaluation on the Stability of Vertical Mine Shafts below Thick Loose Strata Based on the Comprehensive Weight Method and a Fuzzy Matter-Element Analysis Model 