基于灰色关联理论的采场结构参数优选

Optimization Selection of the Stope Structural Parameters Based on Grey Correlation Theory

为了研究川口钨矿的采场安全性并确定合理的采场结构参数,应用MIDAS数值模拟方法,得出了不同采场结构参数下的顶板应力和位移,从安全角度初步确定了较优的采场结构参数。采用灰色关联理论,全面考虑影响采场结构参数的经济、技术、安全三类因素,建立了4种备选方案,计算出各采场结构参数方案基于评判指标的灰色关联度,分别为0.821,0.842,0.865,0.817,从而确定最优采场结构参数,即顶柱厚3 m,矿房跨度为15 m,矿柱跨度为8 m。实践证明,运用数值模拟和灰色关联理论优选采场结构参数的方法是科学可行的。

In order to analyze the stope safety and determine the reasonable stope structural parame- ters in Chuankou tungsten mine, the MIDAS numerical simulation method is taken so as to obtain the val- ues of stress and displacement of roof of different stope structural parameters, and the optimal stope struc- tural parameters are determined preliminary from the security point of view. Based on grey correlation theory, the four alternatives schemes are established by considering the factors of economic, technical and safety that influence the stope structural parameters. The grey correlation degrees of stope structural pa- rameters schemes based on evaluation indicators are calculated,they are 0. 821,0. 842 ,0. 865 ,0. 817. So the optimal stope structural parameters are determined,the needle thick is 3 m, the chamber span is 15 m, the pillar span is 8 m. The research results show that, the optimization selection of stope structural parameters based on numerical simulation and grey correlation theory is scientific and feasible.