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Record W3196680150 · doi:10.35624/jminer2021.01.05

Tacos de alto rendimiento TN – Una Innovación probada para la Minería Subterránea

2021· article· es· W3196680150 on OpenAlexaff
Juan Ignacio Silva Bastias, G. Escribá, I. Ormeño, M. Villalobos

Bibliographic record

VenueJOURNAL OF MINING ENGINEERING AND RESEARCH · 2021
Typearticle
Languagees
FieldEngineering
TopicTunneling and Rock Mechanics
Canadian institutionsNutrasource
Fundersnot available
KeywordsHumanitiesArt

Abstract

fetched live from OpenAlex

Casi un 20% de las 5,7 millones de toneladas de cobre que produce Chile provienen de explotaciones en minas subterráneas, cifra que aumentará en los próximos años debido a la incorporación de yacimientos que hoy son explotados en rajo abierto. Por esta razón, existe la necesidad de construir cientos de kilómetros de túneles y galerías, para llegar a las frentes de trabajo donde se extrae el mineral. En Chile, los túneles mineros se construyen según una metodología de excavación convencional, con el uso de perforación y tronadura. siguiendo el ciclo minero. La eficiencia global del ciclo minero depende de varios factores, pero uno de los más relevantes es la eficiencia de la tronadura. En el presente artículo se incluye una discusión teórica que fundamenta la importancia del confinamiento del explosivo en los tiros y los efectos en la eficiencia de la tronadura de un adecuado diseño y fabricación de los Tacos Retenedores. Finalmente, se presentan los resultados preliminares de pruebas industriales realizadas con los Tacos Retenedores de Alto Rendimiento TN en frentes de desarrollo horizontal en minas de Argentina y en la División El Teniente de Codelco. Estos resultados preliminares muestran importantes mejoras en la eficiencia del avance de cada disparo, en reducir la sobre excavación y en la calidad de las marinas, impactando en forma positiva en la productividad del ciclo minero.

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.004
Threshold uncertainty score0.009

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0010.001
Open science0.0000.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0020.001

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 head0.039
GPT teacher head0.332
Teacher spread0.293 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2021
Admission routes1
Has abstractyes

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