To select the appropriate mining methods for the areas of Jiaojia Gold Mine, the stability of rock mass was classified. To overcome the one-sidedness of traditional methods, the method of combining Analytic Hierarchy Process with Fuzzy Comprehensive Evalution was selected. Taking the - 270 m middle part of Jiaojia Gold Mine for example, all the infiuencing factors were fully considered to establish the comprehensive evaluation index system. And the weight vector of all index factors was determined according to the Analytic Hierarchy Process and the membership matrix was established by the principles and methods of fuzzy mathematics. The comprehensive evaluation vectors of rock mass stability determined by fuzzy comprehensive evaluation were (0. 052 1, 0. 556 2, O. 246 9, 0. 135 4, 0. 009 4). It is seen that the rock mass of this part is relatively stable, which is in accord with the actual investigation.%为选择适合焦家金矿各矿区的采矿方法,对岩体稳定性进行分级.克服传统方法片面性,选取层次分析法和模糊综合评价方法相结合的方法,以焦家金矿-270 m中段为例,充分考虑各方面影响因素,建立综合评价指标体系.层次分析法确定各指标因素的权重向量,模糊数学原理和方法确定隶属矩阵,采用模糊综合评价法得出岩体稳定性综合评判向量为(0.0521,0.5562,0.2469,0.1354,0.0094),可确定此中段岩体较稳定,与矿山实际调查情况相同.
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