Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/135466
Type: | Conference paper |
Title: | Mineral resource modelling of variables with inequality constraints: a case study of an iron ore deposit |
Author: | Abulkhair, S. Madani, N. |
Citation: | Proceedings of the 40th International Symposium on the Application of Computers and Operations Research in the Minerals Industries (APCOM, 2021), 2021 / Musingwini, C., Woodhall, M. (ed./s), pp.449-458 |
Publisher: | SAIMM |
Publisher Place: | Johannesburg |
Issue Date: | 2021 |
ISBN: | 978-1-928410-26-3 |
Conference Name: | Application of Computers and Operations Research in the Mineral Industry, (APCOM) (30 Aug 2021 - 1 Sep 2021 : virtual online) |
Editor: | Musingwini, C. Woodhall, M. |
Statement of Responsibility: | Sultan Abulkhair, Nasser Madani |
Abstract: | In multivariate geostatistics, it is common to have different types of complexities between variables of interest. In this context, an inequality constraint is an example of complex bivariate relationships. Unfortunately, traditional co-kriging and co-simulation algorithms cannot reproduce this type of bivariate complexity, leading to the overestimation of disturbing elements. This paper proposes a new algorithm based on a hierarchical sequential Gaussian co-simulation framework, integrated with inverse transform sampling, to model inequality constraints between variables. First, the proposed methodology's validity was evaluated by applying it to a real case study from an iron deposit, with an inequality constraint between iron and aluminum oxide. Then the simulated results were compared with a conventional hierarchical co-simulation algorithm to investigate the effect of inverse transform sampling on the quality of the co-simulation. The results showed that the proposed algorithm can reproduce an inequality constraint between variables. |
Rights: | © The Authors Except where otherwise noted, this item's license is described as CC0 1.0 Universal |
Published version: | https://nur.nu.edu.kz/handle/123456789/5836 |
Appears in Collections: | Civil and Environmental Engineering publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_135466.pdf | Published version | 2.35 MB | Adobe PDF | View/Open |
hdl_135466_Coversheet.pdf | Coversheet | 53.4 kB | Adobe PDF | View/Open |
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