基于模糊评价的某金矿采场结构参数优化研究

Optimization Research on Stope Structure Parameters in a Gold Mine Based on Fuzzy Evaluation

实现矿体安全高效开采的关键措施之一是采用适合的采场结构参数。针对某金矿机械化上向水平分层充填法存在的问题,构建了5种不同矿柱和矿房宽度的组合方案,采用ANSYS软件对不同方案的采场围岩位移场、应力场及塑性区变化规律进行了数值计算。在数值模拟结果的基础上,综合考虑影响采场稳定的其他因素,采用熵值法分别确定各定量和定性指标的权重,经模糊数学综合评价,得到方案隶属度向量,最终确定采场的最优结构参数,即矿柱和矿房宽度均为14m,可确保回采作业安全。

One of key measures to achieve the safe and efficient mining is to adopt rational stope structure parameters. Aimed at the existing problems of the mechanical upward horizontal filling method in a gold mine, 5 different combination schemes of the pillar and room width were established, and the variation laws of displacement, stress and plastic zones of the surrounding rock under the different schemes were calculated by ANSYS. On the basis of the numerical simulation, the other factors influencing stope stability were taken into account comprehensively, and the weight values of quantitative and qualitative index were determined respectively by the entropy method. Then, the optimal stope structural parameters were determined through comprehensive fuzzy evaluation to obtain the subordinated vectors of the schemes, and namely the pillar and room width of the stope were both 14 m, which could guarantee stope safety.