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Fundamentos de Block/ Panel Caving
Cátedra Codelco de Tecnología Minera
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Block and panel caving •
•
Block caving Método de explotación masivo –
en la cual un bloque de mineral en algunos casos representando el area basal del cuerpo mineralizado se corta en su base y luego a partir de la extracción se produce la propagación del hundimiento Panel caving es una forma del método de –
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Sistema Minero de Block Cave Caving Undercut Drilling Undercut Level
Draw Point
Production Level
Tipping point
Ore Passes Feeder
Secondary Breakage
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Caracteristicas del Método
Utilizado por las minas subterráneas más grandes del mundo
Alta producción: producción: 5,000 to 45,000 45,000 tpd
El menor costo de producción por tonelada
Excelente productividad por persona y equipos
Se puede automatizar
Posee una bajo grado de selectividad
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Block Caving •
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Cuerpos masivos con una proyección en planta suficiente para inducir el hundimiento de la roca La roca mineralizada a hundir debe ser medianamente competente 3A-4A La roca estéril de techo debe ser hundible La roca de caja puede ser competente como en el caso de pipas diamantiferas Se induce el hundimiento de la roca a través del corte basal 4-12 m. El hundimiento se propaga en la medida que la roca es extraída del
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Why is Block Caving relevant? Bingham Canyon Henderson
IVANHOE
Philex_Padcal Freeport_DOZ
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Algunos Indicadores Mina El Teniente El S l d
Pais Chile Chil
Layout Producción (Mt) LHD/Parrillas 54 LHD 10
Productos Cobre C b
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Evolution of daily production rates at selected large underground mines 160000
140000
g f n o i n g i n m i d n n r e u d o o F M m . R
t e c e g e d j o l r l n p o u o s C r n l g o r a i e i t r d a e v p n u a
l y a d n t u o i S t a g n n r i e v t a n I C
El Teniente
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Evolution of maximum mining depth for selected mines 3500
3000
t g f e c e n g j o i e d o n g l i r n l n p o u m i o s d C r n n r n l g o r u e a i e i t o d F r d a o . M e n m s R p u v a c c f i m x I I o n S e
l y a d n t u o S i t a g n n r i e v t n a I C
Kidd Creek
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Modelo Conceptual Ore Body Cavability
Stresses
Fragmentation
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Parámetros considerados por diferentes métodos de clasificación de rocas
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Caracterización Geotécnica
(Flores &
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