覆岩散体粒径空间分布对岩石混入的影响

针对崩落法在覆盖岩层下放矿岩石混入率高的问题,提出基于隶属度描述覆岩散体粒径空间分布对岩石混入影响的方法.在散体级配的基础上,用模型实验的方法构建了同一粒径级配下覆盖岩层的三种粒径空间分布模型,并用隶属度对模型进行量化.首先建立三种覆岩散体粒径空间分布模型,然后将其对指定子集的隶属度作为描述岩石混入的方法,对比等量放矿条件下的岩石混入结果.实验结果表明:本方法揭示了覆岩散体粒径空间分布对岩石混入过程的影响,对认识岩石混入与矿石贫化发生具有指导意义.

Effect of Particle Size Space Distribution in Coverage Rocks on Rocks Mixture

In view of higher rocks mixture rate of ore drawing under the coverage rocks， a method describing the effect of particle size space distribution in coverage rocks on rocks mixture was proposed based on the degree of membership. On the basis of coverage rocks gradation， the model-experiment method was used to construct three sorts of coverage rocks’ particle size space distribution with identical gradation， and the degree of membership was used to quantify the model-experiment. Firstly， three sorts of particle size space distribution in coverage rocks were constructed. Then the degree of membership about specific subset was used to quantify the particle size space distribution in coverage rocks and rocks mixture process was estimated. Finally， the results of rocks mixture rate at equal ore drawing were compared. The model-experimental results showed that the method can reveal the effect of particle size space distribution in coverage rocks on rocks mixture， and it is a significant and helpful method to understand the process of rocks mixture and ore dilution.