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由于残矿空间形态的复杂性,传统的剖切作图方法难以直观全面地掌握该类型矿体形态,进而难以精确指导采切工程的设计,而SURPAC软件采用三维建模方法,能很好地解决这一难题.以西石门铁矿堑沟底部结构诱导冒落法开采残矿为背景,采用SURPAC软件对堑沟内矿石量、金属量、品位等指标进行计算,将堑沟巷道所在的水平和垂直位置作为优化对象,经过对临界冒落跨度和现场工程技术条件的分析,得出堑沟巷道在两个方向上可布置的范围.依据该范围,设计了正交试验方案.以回采金属量和平均品位作为考核指标,对正交试验结果进行极差和方差分析,得出最优的堑沟巷道空间位置:堑沟巷道间距24 m,位于118 m水平.通过现场实施,取得理想的试验效果,实现了残矿的精细化开采.
Due to the complexity of spatial morphology of residual ore, it is difficult to grasp the shape of this type of ore body intuitively and comprehensively by traditional method of sectional mapping, which makes it difficult to accurately guide the design of cutting and cutting engineering. SURPAC software uses three-dimensional modeling method, which can well To solve this problem.Using SURPAC software to calculate the ore amount, metal content, grade and other indicators in the ditch of the trench, taking the bottom structure of the Shimen iron ore cut trench induced by the caving method as the background, Vertical position as the optimization object, through the analysis of the critical falling span and the technical conditions of the site engineering, we can draw the range that the trench can be arranged in two directions.According to this range, And the average grade as the evaluation index, the results of the orthogonal test were conducted with range and variance analysis, and the optimal location of the roadway in the valley was obtained: the distance between the roadway and the roadway was 24 m and 118 m, and the ideal test Effect, to achieve the fine mining of residual ore.