The Error Discussion On Ore Reserve Estimation

In the solid ore exploration the ore reserve calculation is a very important work.On the evaluation of ore value, exploitation style and exploration work, accuratecalculation of ore reserves has great significance. Reasonable method of reservecalculation will reduce exploration risk and exploration costs while it will improveexploration efficiency.This article will use geostatistics to calculate ore reserve based on the fractalmodel. The fractal model can be implemented by mathematical statistics andprogramming software. In this paper, two different methods of ore reserve estimationwould be discussed, which are the geometric block method (GBM) and the fractalmodel for reserve estimation (FMRE).In this paper, matrices are using to establish the model with the C++and Surfer.The fractal model is based on fifteen dimension values, which are0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.2,1.6,2,2.4,2.8,3.2. The following conclusions can be getby the analysis of the matrix model.Firstly, according to the results of the two kings of relative error, the value of thedimension can affect the calculation results of the reserve via GBM more than byFMRE.Secondly, the dimension has a big impact on the lacunarity. The smaller of thedimension, the bigger of the lacunatity will be. On the contrary, the bigger of thedimension, the smaller of the lacunarity would be.Thirdly, to analyze the effect of the survey grid to the calculation results of theore reserve. The denser of the survey grid, the reserve calculation will certainly bemore accurate. However, making more frequent exploration network will increase the exploration costs. Therefore, while ensuring the accuracy of the calculation results,the survey gird with lower exploration costs and higher efficiency will be the mostreasonable one.