Slope stability evaluation of open-pit coal mine external dump based on AHP-FCE model
In order to avoid the situation where a single quantitative evaluation method is difficult to consider qualitative influencing factors that may affect the stability of the external dump of open-pit coal mines,the article uses a comprehensive evaluation method that combines qualitative and quantitative multiple indicators,establishes a mathematical model through AHP(Analytic Hierarchy Process)and FCE(Fuzzy Comprehensive Discrimination Method)to comprehensively evaluate 12 qualitative and quantitative indicators that affect the stability of external dump slopes.The YAAHP software based on AHP method is used to determine the indicator weights for the slope of an open-pit coal mine external dump.The weights are inserted into the FCE model and a calculation matrix is formed through continuous and discrete membership functions,so stability evaluation is carried out;;and validate the AHP-FCE model results using Slide numerical simulation software.The results show that the slope of the external dump is in a generally stable state.Subsequently,the results of the AHP-FCE model are validated using Slide numerical simulation software,and the conclusion obtained from the verification is basically consistent with the results of the comprehensive discrimination method.
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