无底柱分段崩落法采场结构参数优化研究

Optimization research of stope structural parameters in sublevel caving with non-pillar

分析了目前崩落法结构参数优化的常用方法及存在问题,采用随机介质放矿理论建立了进路间距优化的数学模型,并推导出崩矿步距的理论计算公式;为了评价结构参数的综合经济技术指标,给出了采场结构参数与采出率和贫化率之间的计算公式;最后,将所提出的方法在矿山进行了实际应用,并与传统的采场结构参数优化方法进行了对比。对比结果表明,所提出的优化方法与实际基本相符。

The common methods for optimizing structure parameters were analyzed and existing problems were also discussed.Then,optimizing mathematical model for approach spacing was set up by using the stochastic medium theory of drawing.Moreover,the calculation formula for drawing step was derived.To evaluate the total technique and economic effects for different stope structural parameters,the calculation formula of recovery rate and dilution rate to stope structural parameters was put forward.Lastly,the new method was compared with the traditional methods of determining stope structure parameters in a underground mine.The contrast results indicate that the new method match up to the reality.