浅孔房柱嗣后充填采矿法AHP-Fuzzy参数优化

Optimization of AHP-Fuzzy Parameters in Shallow Hole Room and Pillar Mining Method with Subsequence Filling

根据永平矿体的赋存条件和矿岩稳固性特性,采用浅孔房柱嗣后充填采矿技术方法进行开采,提出了3种采矿方案的矿房矿柱设计。由于浅孔房柱嗣后充填采矿法实际工程中存在诸多模糊信息,为了实现矿山安全、经济和高效的开发,采用层次分析模糊综合评价方法(AHP-Fuzzy)对采场结构参数进行优化。AHP-Fuzzy综合评价法是借助层次分析法构建判断矩阵,确定各层次的指标权重;然后采用模糊数学的方法,充分考虑工程实际经验,构造影响采矿方案的隶属度矩阵;最后根据权重向量和指标隶属度矩阵确定综合评判向量,选出最优的开采方案。该方法能全面考虑各因素的影响,定性与定量相结合,充分体现了评价因素和评价过程的模糊性,减少了主观臆断对评价的影响,提高了评价结果的可信度。优化结果表明,方案2的综合优越度为92.52%,优于其他2个方案,故方案2为最优开采方案。

According to the occurrence condition of Yongping orebody and the firmness of rocks, the shallow-hole room and pillar mining method with subsequence filling is adopted. For this, three kinds of mining schemes for pillar and chamber＇s design was put forward. Since there are many fuzzy information in practical engineering of the shallow hole room and pillar min- ing method with subsequence filling, the analytic hierarchy fuzzy comprehensive evaluation method （AHP-Fuzzy） was used to optimize the stope structure parameters,in order to realize the safe mining, economic and efficient development. With the aid of AHP method, AHP and Fuzzy comprehensive evaluation method can be used to construct judgment matrix and determine the level of the index weight; Then,with the method of fuzzy mathematics, and fully considering the practical engineering experi- ence, the membership degree matrix influencing the mining scheme was proposed. According to the weight vector and the mem- bership degree matrix, the comprehensive evaluation vector is determined, and the optimal scheme is given. This method com- prehensively considers the influence of various factors, and combines with the quantitative and the qualitative analysis. It fully reflects the fuzziness of the evaluation factors and evaluation process, and reduces the subjective influence on evaluation, and improves the credibility of evaluation. Optimization results show that the scheme 2 owns comprehensive superiority degree of 92.52%, and is superior to other two schemes, so the scheme 2 is the optimal one.