Algorithms for multi-parameter constrained compositing of borehole assay intervals from economic aspects

Ma, Xiaogang, Carranza, Emmanuel John M., van der Meer, Freek D., Wu, Chonglong, and Zhang, Xialin (2010) Algorithms for multi-parameter constrained compositing of borehole assay intervals from economic aspects. Computers & Geosciences, 36 (7). pp. 945-952.

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Compositing of borehole assay intervals based on economic aspects is a primary step when the cross-sectional method is applied in orebody modelling and mineral resources estimation. The compositing is important because the resulting ore composites eventually determine the outlines of orebody models. However, numerous boreholes and borehole intervals make ore compositing tedious and time-consuming for manual work. A computer program for compositing is desirable to facilitate the task and to obtain accurate results. In the design of computer algorithms for such a computer program, dilution is the most difficult part because dilution means adding waste intervals into an ore composite in order to transfer it from unminable to minable and this causes some special situations in a compositing procedure. In order to obtain economically optimized compositing results, we paid special attention to dilution in the designed algorithms. A demo program has been developed to test and implement these algorithms using borehole assay datasets from a mine site in China. Results show the accuracy of designed computer algorithms and the feasibility of applying a computer program in compositing of borehole assay intervals.

Item ID: 27349
Item Type: Article (Research - C1)
ISSN: 1873-7803
Keywords: cross section; dilution; profit value of composite; nested looping construct
Date Deposited: 07 Jun 2013 02:12
FoR Codes: 04 EARTH SCIENCES > 0499 Other Earth Sciences > 049999 Earth Sciences not elsewhere classified @ 20%
01 MATHEMATICAL SCIENCES > 0103 Numerical and Computational Mathematics > 010399 Numerical and Computational Mathematics not elsewhere classified @ 80%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8499 Other Mineral Resources (excl. Energy Resources) > 849999 Mineral Resources (excl. Energy Resources) not elsewhere classified @ 100%
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