露天转地下最佳开采模式

Optimal mining model of transition from open-pit to underground mining

建立露天转地下开采模式综合评判模型,运用层次分析法和模糊数学的基本原理对多种开采模式进行评判优选。评判优选过程中,综合考虑影响露天转地下开采模式的动态、静态、定量、非定量指标,如技术、经济指标及边坡稳定程度等;将待选择方案指标转换成隶属度矩阵,通过层次分析法得到各因素权重向量;从而建立模糊综合评判模型,利用模糊数学原理计算出各方案基于影响因素的综合优越度。以石人沟铁矿为例,4种开采模式的优越度分别为45.82%,84.32%,89.88%,80.75%,从而确定第3种方案最优。

Based on the synthetic assessment model of the transition from open-pit to underground mining mining model,the analytic hierarchy process（AHP） and the fuzzy mathematics methods fundamental theory were used to make a synthetic assessment.During this process,lots of dynamic and static,fix and non-fix quantified influence factors working on the mining method were taken into synthetic account,such as the technical and economic factors and degree of slope stability etc.The influence factor indexes of the mining methods were transformed into the matrix of the membership degrees;the weight of the influence factors matrix was established according to the AHP method.With the weights matrix and the matrix of the membership degrees,the fuzzy synthetic judge model was established,and the synthetic superior degree of the mining methods based on the influence factors was obtained by the numeration with the fuzzy mathematics methods.The synthetic superior degree of mining models in Shirengou Iron Mine are 0.458 2,0.843 2,0.898 8,0.807 5,respectively,according to this method,and the third mining model comes to the first place.