Study On Stability Evaluation Of Tailings Dam Base On Fuzzy Comprehensive Evalution Method

As tailings dam is the most important structures of the tailings system facilities,the stability of it often determines whether the tailings operates safely or not。Once the tailings dam fails,not only can cause huge economic losses to the state,but also endanger the lives safety of local residents in the downstream of tailings dam and affects the surrounding ecological environment,so the study of stability of the tailings dam evaluation is very meaningful and valuable。Based on the analysis of structure features of tailings dam and the external factors,combining with the actual engineering application of tailings dam,by analyzing the various of types that tailings dam fails and its causes,identifying six major aspects which influence the stability of tailings dam:starter dam 、embankment、drainage system、seepage system 、natural factors、management factors。Form the six major aspects,that analysis nineteen evaluation indexes about the stability of tailings dam deeply,which including ten qualitative indexes and nine quantitative indexes, then building the evaluation index system of the evaluation of tailings dam stability。Referencing to the experience of stability evaluation in slope engineering and other related industry,and cogitating several factors,to build evaluation level set of the evaluation of tailings dam stability,so can have a more intuitive understanding about the operation condition of tailings dam。Evaluation index system and evaluation level set constitute evaluation system of the evaluation of tailings dam stability。When building the evaluation model of the tailings dam stability,establish the structural system of the evaluation of tailings dam stability by Analytic Hierarchy Process(AHP)。By the fuzzy comprehensive evaluation method and the research result and experience of the slope engineering of stability evaluation,determining the relative important degree(weight) of all evaluation indexes of tailings dam stability,then building the evaluation model of tailings dam stability basing on the fuzzy comprehensive evaluation method。Though practical tailings dam engineering as research object,to evaluate the stability of tailings dam by the evaluation model of tailings dam stability basing on the fuzzy comprehensive evaluation method,at the end,The evaluation results contrast with the actual monitoring data。...