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Analysis of induced stress during construction and production stages of drawbells in block caving mines
Indexado
WoS WOS:001224958700001
DOI 10.1177/25726668241241989
Año 2024
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



Drawbells are large constructions that allow the flow of the broken ore at the production level within the drawpoints. The results of drawbell construction are crucial for a successful mine plan extraction in a block caving mine. Analysis and integration of all the topics related to a drawbell can improve the performance of the surrounding area of drawbells, particularly the damage associated to induced stress during the different stages of a block caving operation. The improvement of operational aspects related to the drawbells would decrease the risk of failure, particularly in deep mines subject to large stresses, which are more likely to experience sudden violent or progressive failure. A large-scale numerical model was developed to analyse different mining sectors using sub-models. It was found that the geotechnical response is highly correlated to the stress field, which also controlled the resulting seismicity. In a scale of a drawbell, the drawpoint drift roof and the bridge pillar between the drawbell and the undercutting level were found the most critical zones in the design. When geological structures are present, they can be activated in the construction at an earlier stage and, therefore, could easily become critical in the resulting rock mass damage.

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Disciplinas de Investigación



WOS
Mining & Mineral Processing
Scopus
Geology
Geotechnical Engineering And Engineering Geology
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Bustos, Nadia - Curtin Univ - Australia
2 Villaescusa, Ernesto - Curtin Univ - Australia
3 Garcia, Fernando - MVA Geoconsulta - Chile

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Financiamiento



Fuente
National Agency for Research and Development (ANID)/Scholarship Program/DOCTORADO BECAS CHILE/2017

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Agradecimientos



Agradecimiento
The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the National Agency for Research and Development (ANID)/Scholarship Program/DOCTORADO BECAS CHILE/2017 (grant number 72180287).

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