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Record W6983776234

Novel optimization models for surface and underground mine planning

2019· dissertation· en· W6983776234 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

fundA Canadian funder is recorded on the work.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueeScholarship@McGill (McGill) · 2019
Typedissertation
Languageen
FieldArts and Humanities
TopicLibraries and Information Services
Canadian institutionsnot available
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsSurface miningProfitability indexUnderground mining (soft rock)Scope (computer science)Linear programmingResource (disambiguation)OverburdenProductivityInteger programming
DOInot available

Abstract

fetched live from OpenAlex

Mine planning and optimization affect efficiency, profitability and productivity of operations significantly.Low commodity prices, high resource degredation maintenance costs and high fixed infrastructure costs necessitate the use of optimal decision making tools for mining companies to make profit.All mines have different characteristics and planning phases.In this research, different optimization problems that suit various mining techniques and planning stages are studied.In essential, there are two types of mining: surface mining and underground mining.Surface mining operations are generally long-term because overburden must be removed to access the profitable orebody.This requires strategic long-term planning at the feasibility stage.The first publication in the scope of this research focuses on long-term surface mine planning with environmental considerations.The provided solution optimizes the problem using mixed integer linear programming (MILP).When operation starts and bench sectors are mined on a daily basis, the need for short term planning arises.The second publication addresses the dig-limit optimization problem, which is an important part of short-term planning.With the proposed MILP optimization method, the ore-waste boundaries are delineated with the equipment size constraints.Although underground mining also starts with exploration and resource estimation/simulation stages, the problems that need to be addressed are very different from surface mining techniques and it has its own unique challenges.Special focus is given to the subi I would like to express my gratitude to Prof. Mustafa Kumral for being an exceptional supervisor with his invaluable guidance and insights.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Science and technology studies
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.878
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0010.000
Scholarly communication0.0010.005
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.049
GPT teacher head0.240
Teacher spread0.191 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it