基于模糊综合评价理论的采矿方法优选

Optimization of Mining Method Selection with Fuzzy Comprehensive Evaluation

利用模糊综合评价理论,对地下矿山采矿方法进行优选。将采矿方法待选方案作为评价集,技术经济指标作为因素集,首先根据层次分析法,将决策分为目标层、准则层和措施层,采用比例标度法建立因素间的判断矩阵,从而计算因素权重;然后构建评价集与因素集之间的模糊关系矩阵;最后将因素权重与模糊关系矩阵作乘积运算,得到各方案的综合评价值。以某汞矿为例,采用模糊综合评价方法进行了采矿方法优选,最终选择机械化上向水平分层充填法作为开采方案;优化结果与企业设计采用的方法一致,证明该决策方法是可行的。

Research on optimization of underground mining technique selection with fuzzy comprehensive evaluation was stated. With mining technique for selection as evaluation set and techno-economic indicators as factor set,the final decision was divided into three levels based on AHP,including objective level,project level and factor level. A proportional scale method was used to construct a judgment matrix of factors,so as to determine weighting factors. After the matrix format was constructed for the fuzzy relations between evaluation set and factor set,the matrix of fuzzy relations multiplied by factor-weight matrix could lead to the comprehensive evaluation of each scheme. This fuzzy comprehensive evaluation method was used for a mercury ore mine,leading to the mechanical upward horizontal cut and fill stoping method selected as an optimized mining method. This result,being agreeable with the engineering design,indicates the feasibility of such method.