基于响应曲面法的采场结构参数优化

Optimization of Stope Structure Parameters Based on Response Surface Method

针对地下矿山采场结构参数的优化选择,采用响应曲面法设计试验方案,利用FLAC;数值软件进行试验模拟。通过分析对比数值模拟实测值与响应曲面预测值,验证了响应曲面预测值与数值模拟实测值之间的差异较小;给出了各影响因素对采场稳定性影响程度的排序:矿房长度>间柱宽度>顶柱厚度。建立了采场稳定性与采场结构参数间的优化模型,对某钨钼矿山利用模型进行采场结构参数优化。结果表明,矿房长度48.25 m,间柱宽度10 m,顶柱厚度4 m是该矿山的最优采场结构参数,优化后的采场稳定性良好,采切比较优化前明显降低,证明了响应曲面法应用于采场结构参数优化具有较好的适用性。

In view of the optimal selection of stope structural parameters of underground mines, the response surface method was used to design the test scheme, and the FLAC;numerical software was used to carry out the test simulation. Through the analysis and comparison of the numerical simulation measured value and the response surface predicted value, it was verified that the difference between the predicted value and the measured value was small. The order of the influence factors on stope stability was length of mine room>width of inter-pillar>thickness of top pillar. Then, an optimization model between stope stability and stope structure parameters was established, and the stope structure parameters were optimized for a tungsten-molybdenum mine based on the model. The results show that the optimal stope structure parameters of the mine are obtained that the length of the mine room is 48.25 m, the width of the pillars is 10 m, and the thickness of the top pillar is 4 m. After optimization, the stope stability is good, and the mining to cutting ratio is obviously lower, which proves that the response surface method has a good applicability in the optimization of stope structure parameters.