Study On Calculation Technique Of Minera Resources Reserve And Its Application In Mining Right Evaluation

The reserve calculation of resources is an important work in the mineral exploration. Its result is not only the basis of mine design and production, but also the foundation of mining right evaluation when there is a mine waiting for being sold or transferred. Because of the low efficiency and low accuracy of traditional reserve calculation technique used for a long period of time in mine right evaluation, it has become a bottleneck which influences the precision of mine right evaluation result. Bringing regionalized variables into reserves estimation, geostatistics considers the correlation and the variability between samples to improve the precision of estimates greatly.Centering on the problem of geostatistical reserve calculation technique in mining right assessment, this dissertation has studied the theory of geostatistics systematically, and then aiming at the problem that grades of the samples often deviate from normal distribution when using Kriging methods, it raised the power transformation to convert sample data to normal; after analyzing the basic theory and process of Universal Kriging Reserve Calculation, this dissertation studied the four main factors affecting the variance of Universal Kriging, including preprocessing of regionalized variable, combined sample handling, data stability and variogram. Then it proposed the algorithm to control Kriging variance; afterwards, three approches and the common methods used in evaluating exploration right or mining right were discussed, as well as the application of reserve calculation technique to evaluation. Combining with the actual evaluation work, the dissertation presented that using geostatistical methods to calculate reserve of mineral resources in mining right evaluation.Based on the theoretical study, this dissertation took an iron mine in Ezhou, Hubei for an example, and then completed reverse calculation in the mining right evaluation. Through the comparative analysis of Inverse Square Distance Methods and Universal Kriging, it proved the superiority and practicality of geostatistics. Thus it can provide another technological measure for resources' reserve calculation in mining rights evaluation.