The effect of accumulation in 2D estimates in phosphatic ore

Rem: Revista Escola de Minas

Diego Machado Marques²  Ricardo Hundelshaussen Rubio¹  João Felipe Coimbra Leite Costa¹  Evangelina Maria Apparicio Da Silva¹ 

[1] ,UFRGS Mining Engineering Department Porto Alegre Rio Grande do Sul ,Brasil

关键词: accumulation;    ordinary kriging;    phosphate;    acumulação;    krigagem ordinária;    fosfato;   

DOI  :  10.1590/0370-44672014670179

来源: SciELO

【 摘 要 】

The geological modeling of stratiform deposits can become very complex, often making use of geological envelopes of small thickness and requiring the use of subblocks (based on Cartesian coordinates) to produce a coherent block model. However, geological events after the formation of the deposit (folds, faults, etc.) can change the direction of spatial continuity of certain attributes, with the mixing of samples belonging to different formation eras (in the case of stratiform deposits) in the same elevation. This study presents a solution for deposits with stratigraphic grades combined with samples of different origins. The solution is a two-dimensional estimate obtained by accumulating the thicknesses of P2O5 in a phosphate deposit (as compared to traditional statistical analysis in three dimensions).

【 授权许可】

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