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Permanent link (DOI): https://doi.org/10.7939/R3M902B2T

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Integrated System for Improved Grade Control in Open Pit Mines Open Access

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Other title
Subject/Keyword
Geostatistics
Grade control
Simulation
Blast movement
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Vasylchuk, Yaroslav V.
Supervisor and department
Deutsch, Clayton V. (Department of Civil and Environmental Engineering)
Examining committee member and department
Apel, Derek (Department of Civil and Environmental Engineering)
Boisvert, Jeff (Department of Civil and Environmental Engineering)
Deutsch, Clayton V. (Department of Civil and Environmental Engineering)
Department
Department of Civil and Environmental Engineering
Specialization
Mining Engineering
Date accepted
2016-06-10T14:18:14Z
Graduation date
2016-06:Fall 2016
Degree
Master of Science
Degree level
Master's
Abstract
Grade control establishes the final destinations for mined material (plant, stockpile, waste dump, etc.) at the time of mining. Correct decisions bring profit to a mining company while incorrect decisions bring losses. There are several potential sources of misclassification of mined material: i) unreasonable prediction of grade, ii) failing to account for the consequences of incorrect decisions, iii) ignoring blast movement of rocks, and iv) imprecise selection of mined material using large polygons. This thesis provides tools for addressing some sources of misclassification. A reasonable range of grid sizes for grade control models is determined. The use of simulation and utility theory for grade control classification are illustrated with a series of examples. A program for predicting approximate blast movement of rocks is developed. Grade control dig limits are replaced with truck-by-truck determination of the optimal destination. The new selection paradigm combines all of these considerations in a unified approach.
Language
English
DOI
doi:10.7939/R3M902B2T
Rights
This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for the purpose of private, scholarly or scientific research. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
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