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无底柱分段崩落法放矿的研究中,大都使用模型实验方法,分析研究矿石损失贫化与结构参数等的数值关系。模型实验法有两个难处:第一,必须用立体模型进行实验,实验准备及实验的工作量很大;第二,难于给出崩落矿岩移动过程,亦即不能给出矿石损失贫化过程,只能给出结果——损失贫化值。我们在研究无底柱分段崩落法放矿时崩落矿岩移动规律的基础上,推导出崩落矿岩的移动方程,并以此为数学模型,建立了数值模拟放矿理论体系,用以模拟放矿过程。数值模拟放矿不仅可以用来预测矿石损失贫化值,完成模型实验的功能,同时还可以揭示
In the research of sub-caving subsidence caving, most of them use the model experimental method to analyze and study the numerical relationship between ore loss depletion and structural parameters. There are two difficulties in the model experiment: first, the experiment must be carried out with a three-dimensional model, and the workload of experiment preparation and experiment is very large; secondly, it is difficult to give the movement process of the cofferdams, that is, the loss and depletion of ore can not be given , Can only give the result - loss of dilution value. Based on the study of the movement law of caving ore during sub-caving mining without bottom pillar, we deduced the movement equation of caving ore as a mathematical model and established the theoretical system of numerical simulation ore drawing to simulate Ore process. The numerical simulation of ore drawing can not only be used to predict the loss and loss of ore, but also to reveal the function of the model experiment