PONTIFICIA UNIVERSIDAD CATOLICA DEL PERU FACULTAD DE CIENCIAS E INGENIERIA ESPECIALIDAD: INGENIERIA DE MINAS
INFORME DE LAS PRÁCTICAS SUPERVISADAS PRE-PROFESIONALES 1ra P.S.P.
1
PERIODO
:
Desde (09-01-2013)
EMPRESA
:
Ci Minera Titán del Perú Unidad Esperanza
Hasta (23-03-2013)
División mina – mina – operaciones operaciones en proyecto de profundización A orden del Sr .Ing. .Ing. Anibal Chumbe Chumbe Dirección: Cal. Calle Libertad #114 piso3D-San Isidro Ciudad: Lima Teléfono: 4464937 Ciudad donde se realizó la PSP : Unidad minera Esperanza
ALUMNO
:
Julio Jhonatan Meza Chumpitaz
CODIGO
:
20092203
“La información
contenida en el presente informe no podrá ser revelada a terceros, pues la misma tiene una connotación o finalidad estrictamente académica”
MAYO- 2013
1
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ÍNDICE GENERAL 1.-
Características Generales de la Empresa (y/o Unidad Minera) ……………………………… ………………………………..1 ..1 1.1 Productos que elabora y mercado que abastece …………………………………… ……………………………………… … .2 1.2 Procesos y operaciones principales ……………………………………………………….2 1.3 Edificios e Instalaciones ……………………………………………………………………..5 1.4 Organización y recursos humanos ………………………………………………………….7 1.5 Materia prima que consume y su procedencia…………………………………………….7 1.6 Maquinaria y equipos empleados……………………………………………………………8 1.7 Geología Geolog ía del Depósito ………………………………………………………… …………………………………………………………………….....9 ………….....9 1.8 Método de Minado …………………………………………… ……………………………………………………………………………13 ………………………………13 1.9 Concentración de Minerales ………………………………………………………………….14 1.10 Consideraciones Ambientales: Disposición Disposición de Desmonte, Desmonte, Relaves, Relaves, Efluentes Efluentes líquidos y gaseosos……………………………………………………………………………………..15
2.-
Participación directa del estudiante en la Operación …………………………………………….16 2.1 Descripción del lugar de t rabajo y proceso operativo que se da en él………………...16 él………………...16 2.2 Detalle de los trabajos realizados……………………………………………………………18
3.-
Apreciaciones, Conclusiones y Recomendaciones………………………………………………..22 3.1 Con relación a lo aprendido aprendido en la Universidad Universidad y en la Empresa, Empresa, y comparación compara ción entre la teoría y la práctica…………………………………………………….22 3.2 Con relación a la empresa………………………………………………………………………24 3.3 Con relación a los trabajos realizados………………………………………………………..25
4.-
Anexos
2
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RESUMEN EJECUTIVO La compañía minera Titán del Perú está conformada conformada por la unidad minera Esperanza, Esperanza, la cual realiza sus operaciones en la Región Arequipa- Provincia de Atico –Distrito –Distrito de Caravelí y está ubicada a una altitud de 1991 msnm. La compañía tiene por objetivo lograr obtener concentrados de oro de la más alta calidad. Además de subproductos como cobre. 3
MISIÓN Ser la mejor empresa de la péquela minería subterránea del país en los próximos 7 años
VISIÓN Implementar una cultura y costumbres en el que se priorice el cuidado ambiental y la seguridad
VALORES PRINCIPALES
Protección del medio ambiente
Reducir el número de accidentes
Responsabilidad social
Respeto entre compañeros.
Por otro lado, el lema de la compañía Minera Titán del Perú es: Servir a los demás como nosotros quisiéramos que a nosotros nos sirvan. Esto nos demuestra lo tan comprometido que está la Empresa con los pobladores de la ciudad de Chala, en donde ellos donan víveres a los comedores humanos, humanos, además les ayudan dándoles capacitación para que los pobladores mismos puedan tener su pequeña empresa La compañía es consciente de lo importante de la seguridad minera para evitar algún daño a sus trabajadores, para esto se realizan capacitaciones continuas, además, diariamente, se realizan charlas de 5 minutos. También, el departamento de seguridad realiza inspecciones de ventilación para evitar que los trabajadores contraigan alguna enfermedad ocupacional producto de la continua exposición.
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EXECUTIVE SUMMARY The mining company Titan of the Peru consists Esperanza mining unit, which conducts its operations in the region Arequipa Province Caravelí Penthouse-District and is located at an altitude of 1991 meters. The company aims to achieve gold concentrates to obtain the highest quality. Addition products such as copper.
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MISSION To be the best company in the small underground mining of the country over the next seven years
VISION Implement a culture and customs which prioritizes environmental care and safety
CORE VALUES • Environmental protection • Reduce the number of accidents • Social responsibility • Respect among peers.
Moreover, the mining company Titan of the Peru's motto is: Serving others as we would want to serve us. This shows what is so committed to the company with the inhabitants of the city of Chala, where they donate food to human eaters also help them by providing training to villagers themselves can have your small business
The company is aware of the importance of mine safety to prevent harm to workers, for this ongoing training are made also every day, there are talks of 5 minutes. Also, the security department conducts inspections of ventilation to prevent workers contracting occupational disease continued exposure product.
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INTRODUCCIÓN La compañía Minera Titán del Perú-unidad Esperanza produce concentrados de oro y cobre. Para poder llegar a obtener concentrados la compañía ha visto conveniente poseer divisiones y áreas que trabajen en conjunto siguiendo las pautas del sistema de gestión integrado SL el cual contempla la misión, visión y valores de la empresa, además tiene en cuenta la seguridad de sus trabajadores, cuidado del medio 5
ambiente y la rentabilidad de la actividad extractiva. La formación geología del yacimiento está dada por vetas angostas (de 0.15m a 0.80m), en donde el mineral principal es el oro, pero también existen otros minerales como covelina, cuprita, pirita, calcopirita y calcosina. El método de exploración es el de corte y relleno ascendente (Upper
Cut and and
Fill) además
de breasting y realce dependiendo de la geomecánica de la veta. El reconocimiento de estas se da por medio de niveles (galerías) y subniveles, mientras que el acceso a las labores se da por piques principales e i nclinados. nclinados. Los minerales principales en esta mina son los sulfuros de cobre, sin embargo también existe mineral óxido del tipo I y III. Por esto, en la planta concentradora se realiza una separación para saber qué tipo de proceso utilizar para una recuperación óptima. En el caso de sulfuros se utiliza mayormente el método de flotación de minerales ya que se aprovecha las propiedades hidrofóbicas de los sulfuros, mientras que para los sulfuros se utiliza mayormente el método de cianuración. Los minerales salidos de la mina son dirigidos hacia una tolva para luego pasar hacia chancadoras para ser reducidos de tamaño y posteriormente pasan por los molinos hasta lograr una granulometría de 80 micrones. Pasado la etapa de la molienda de los minerales pasan por el proceso de flotación o cianuración dependiendo del tipo de mineral. Finalmente, luego de conseguir el concentrado, este pasa por una etapa de filtrado para luego ser comercializados, mientras que el líquido obtenido pasar por una etapa de tratamiento para luego ser reutilizado y así ahorra en costos. En este tipo de labores existen grandes peligros y riesgos. Por esto, a los trabajadores se les capacita continuamente y se les explica sobre las normas establecidas en el DS 055 2010 EM. Además se les entrena para que ellos mismos puedan detectar los posibles peligros y cómo evitarlos. También, se le capacita para que aprovechen de una forma óptima los activos de la empresa y así evitar que los equipos y estructuras se dañen lo cual provocaría grandes costos para la empresa.
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1. CARACTERISTICAS GENERALES DE LA EMPRESA –UNIDAD MINERA ESPERANZA 1.1 PRODUCTOS QUE ELABORA Y EL MERCADO QUE ABASTECE La compañía Minera Titán del Perú tiene como finalidad obtener concentrados de oro y cobre de la más alta calidad (libre de impurezas) para que pueda tener una alta rentabilidad en la comercialización. Entre los minerales que se procesan tenemos a covelina, cuprita, pirita, calcopirita y calcosina, oro nativo, calaverita, silvarita entre otros. Los productos obtenidos luego del concentrado son expedidos principalmente al mercado chino, sin embargo, también comercializa con los mercados norteamericano y japonés.
1.2 PROCESO Y OPERACIONES PRINCIPALES
GEOLOGIA La geología en la actividad minera tiene como objetivo hallar nuevas zonas mineralógicas las cuales tengan tengan una ley por encima del break even cut off off con la finalidad de tener un margen positivo y el proyecto sea económicamente viable
MAPEO GEOLOGICO Este proceso es fundamental en todo proyecto de exploración. Esta requiere de una comprensión profunda de los controles litológicos y estructurales de la mineralización. Es una herramienta de exploración rentable y generador de proyectos ya que comunica el sobre el potencial económico de un proyecto a los actores.
TOPOGRAFIA En este proceso se estudia los accidentes geográfi cos de la mina, definiendo su situación y localización por medio del uso de coordenadas. También se realiza un levantamiento de tajos y labores para saber la cantidad de desmonte y mineral que se extraen, además para saber la cantidad de dinero que se va pagar a l a contrata por la labor realizada.
CONTROL DE CALIDAD Este proceso es muy importante ya que se realiza una evaluación al mineral que hay en el
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OPERACIONES EN MINA
PERFORACIÓN La perforación es una etapa muy importante en la cual se realiza un agujero de forma que atraviese la superficie en que se realiza, estos son llamados taladros. La perforación se basa en los principios mecánicos de rotación y percusión, cuya acción de fricción y golpe producen la trituración y astillamiento del macizo rocoso.
VOLADURA También llamada voladura, se colocan primero el Anfo, cartuchos de dinamita, semigelatina, etc. dentro de los taladros ya hechos en el proceso de perforación para luego de efectuar la detonación secuenciada (milisegundos de retraso) poder fracturar o fragmentar la roca. En esta etapa los gases emitidos son muy importantes ya que ayudan a empujar la roca fracturada, sin embargo, la inhalación de estos es nocivo para la salud. Para obtener una voladura eficiente la perforación se debe realizar una buena perforación como también se debe seleccionar el explosivo adecuado.
VENTILACIÓN Este proceso es muy importante ya que proporciona a la mina un flujo de aire en calidad y en cantidad suficiente para diluir la cantidad de contaminantes a límites permitidos en todo s los lugares donde el personal está trabajando para ev itar la intoxicación de los trabajadores a la hora de realizar su labor, esta puede ser natural o mecánica.
DESATE El desate de rocas es la técnica en la cual se detecta las rocas sueltas en cajas y en las coronas, estas se hacen caer con una barretilla. El desatado se debe realizarse siempre
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soldadas, socrete, cuadros de madera, etc., dependiendo de la calidad del macizo rocoso y el tiempo de uso de la labor (labor temporal o permanente).
PLANTA DE BENEFICIO
CHANCADO 8
En este proceso se reduce el tamaño granulométrico del mineral de cabeza. Esta etapa se genera por medio de los siguientes procesos: chancado primario, chancado secundario y chancado terciario, los cuales se obtienen con las chancadoras: de mandíbulas, cónica, de rodillos. Además para tener una eficiencia óptima el porcentaje de humedad no debe ser mayor a 5%.
MOLIENDA En este proceso se pulveriza el material proveniente de la etapa de chancado, En esta etapa se genera la pulpa la cual pasa por hidrociclones (para ser separados por su granulometría) y por concentradores tipo Falcon (los cuales separa el material por su peso específico), luego de esto, el material es dirigido hacia las celdas de flotación o tanques de cianuración según sea el tipo de mineral.
FLOTACIÓN En este proceso se separa los minerales de importancia económica de la ganga, para esto se usa sus sus propiedades hidrofóbicas o aerofóbico de los minerales, también también se puede realizar cambios de las propiedades haciendo uso de colectores y modificadores de pH, espumantes y en algunos acasos NaHS (la cual tiene la propiedad de permitirles a los óxidos flotar). Existen tres tipos de de etapas scavenger, cleaner y rougher, terminada la flotación, se generan un concentrado de sulfuros y otro de óxidos
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LABORATORIO LABORATORIO QUIMICO
CONTROL DE LAS LEYES EN LOS CONCENTRADOS En este proceso se toman muestras de los concentrados provenientes de los distintos proveedores para determinar las leyes y saber si ese lote de mineral va a ser comprado o si necesitará de algún blending para mejorar su ley.
CONTROL DE LAS LEYES DE MINERALES Este procesos el mineral proveniente del control de calidad es llevado al laboratorio químico para determinar las leyes de estas y mediante esto saber si es rentable seguir con la explotación del tajo.
LABORATORIO LABORATORIO METALURGICO
CONTROL DE LA RECUPERACION DEL MINERAL VALIOSO En este proceso se toman pequeñas muestras del mineral la cual pasa por un examen para saber cuánto del mineral valioso de va a recuperar y cuanto va a der el tiempo en que se llega a la recuperación óptima.
1.3 EDIFICIOS E INSTALACIONES
DIVISION DE MANTENIMIENTO
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MINA
OFICINA DE GEOMECANICA
OFICINA DE MINA
OFICINA DE SEGURIDAD
OFICINA DE SUPERINTENDENCIA
PLANTA CONCENTRADORA
OFICINA CHANCADO (PRIMARIO, SEGUNDARIO Y TERCIARIO)
OFICINA DE DE FLOTACION (PB, ZN y CU)
OFICINA DE FILTRO
OFICINA BOMBAS MARS
OFICINA DE DE TRATAMIENTO DE AGUAS ACIDAS
SEGURIDAD Y SALUD OCUPACIONAL
OFICINA DE SEGURIDAD Y VENTILACION
ADMINISTRACION
OFICINA DE ADMINITRACION
OFICINA DE ADMINISTEACION (CONTRATAS)
OFICINA RR.HH
OFICINA DE ASISTENCIA SOCIAL
OFICINA DE LOGISTICA
COMEDOR CENTRAL
VIVIENDA PARA LOS EMPLEADOS VIVIENDAS PARA LOS OBREROS
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1.4 ORGANIZACIÓN Y RECURSOS HUMANOS
ORGANIZACIÓN DEL PERSONAL EN LA MINA ESPERANZA
Personal de staff Personal empleado Personal obrero
62 personas 39 personas 180personas
AREAS Y DIVSIONES PRINCIPALES DE LA MINA ESPERANZA
DIVISION DE GEOLOGIA - -
DIVISION MINA - -
-
-
ADMINISTRACION ASISTENTA SOCIAL
DIVION DE MANTENIMIENTO -
SEGURIDAD VENTILACION
DIVISION ADMINISTRACION -
GEOMECANICA OPERACIONES MINA
DIVION DE SEGURIDAD -
TOPOGRAFIA GEOLOGIA EXPLORACIONES GEOLOGIA DE MINAS
TALLER ELECTRICO Y AUTOMOTRIZ TALLER DE MANTENIMIENTO MINA
UNIDAD MEDICA
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1.5 MATERIA PRIMA QUE CONSUME Y PROCEDENCIA La materia prima utilizada es necesaria para que se desarrollen las actividades en las l abores de avance, tajeos, trabajos de sostenimiento, etc.
MINA
Pernos helicoidales: el proveedor es la empresa aceros Arequipa
Cemento: el proveedor es la empresa de cementos Andino
Brocas, barras de perforación, perforación, rimadoras rimadoras y jackleg: los proveedores son la empresa Atlas Copco y Seco
Madera: los proveedores son unas comunidades de nazca
Anfo, cordón detonante, mecha de seguridad, mecha rápida: los proveedores son la empresa Famesa y Exsa
DIVISION DE SEGURIDAD
Pintura reflectiva
botas de acero, mamelucos ,lentes ,respiradores contra polvo, protectores entre otros (EPP para los trabajadores: proveedor la empresa 3M
1.6 MAQUINARIA Y EQUIPOS EMPLEADOS
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1.7 GEOLOGIA DEL DEPÓSITO
Regionalmente la mina está dentro de una faja de cobre-oro, que sigue un alineamiento EsteOeste y en ella se encuentran yacimientos de oro de mediana y pequeña escala como Ocoña, Calpa, Caravelí, Ishihuinca, Bonanza, Orión, Eugenia, Clavelinas. 13
La mineralización está en vetas angostas (de 0.15 a 0.80 m de espesor), con contenido de oro, cobre y valores subordinados de plata. Se han identificado 19 vetas de las cuales 4 están en operación, la mineralogía de las vetas está constituida por minerales de cobre como: calcosina, calcopirita, covelina, cuprita, malaquita y crisocola. El oro se presenta en estado nativo y como inclusiones en la pirita y la cuprita. Debido a los movimientos orogénicos de la corteza terrestre y dentro de la deformación de plegamientos de la zona costera en esta parte del territorio por las fuerzas compresionales de la orogenia Andina es que se podría indicar que existen dos fallas regionales de rumbo que se ubicarían en los lineamientos lineamientos estructurales estructurales NE (actuando como corredor tectónico) dentro de las Quebradas de los Ríos Atico y Cháparra respectivamente; que controlan la ocurrencia de las vetas de La Mina Esperanza de Caravelí; así como la mineralización periférica con la misma o similar orientación de las vetas de las otras minas cercanas como son: Torrecillas, Virgen de
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Entre otras menores que existen en la zona desde el lindero Este hasta el lindero Oeste de las concesiones mineras de la mina Esperanza de Caravelí y todas más o menos con las direcciones o rumbo descritos anteriormente.
Las fallas post-minerales presentan dos juegos de movimiento o sistemas:
1.- El primero tiene un rumbo de N05°E a N10°E N10°E y con buzamientos de 74° hasta 85° hacia el NW y con movimiento de desplazamiento normal-dextral normal-dextral y en bloques.
2.- El segundo tiene un rumbo de N10°W, N10°W, con buzamientos desde 78° hasta 82° hacia el NE y también con movimientos de desplazamiento del tipo normal-dextral debido a los efectos de compresión de esta parte de la cadena plegada de la costa. La Falla Sud América tiene una componente diferente con buzamientos primero hacia el SW en el extremo norte y cambia cambia luego más al sur del yacimiento
hacia el NE teniendo un
movimiento del tipo normal-dextral también hacia esta parte y con movimiento en bloques.
Todas estas fallas desplazan a las diferentes vetas en el orden de 5 a 15 metros en el peor de
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Esto ocasiona que este fallamiento fuerte y regional corte y desplace a la veta Aurora creando zonas de mineral mi neral de arrastre llamadas vetas Mariela, Coyla, Gaby, etc.
Finalmente y en forma sin tectónica tectónica con el fallamiento de la Falla Falla Médano se activan algunas de las fracturas ya mineralizadas como es la veta Gisela Gisela y al actuar las fallas Miriam Miriam y Pampini (a lo largo de la Veta Gisela con material de brecha de falla) ocasionan algunos desplazamientos de los bloques así como generando arrastre de mineralización de algunas vetas que las cortan como Esperanza, Esperanza, Pique Tuerto, etc., dentro de la falla Miriam Miriam que hasta hasta hace poco la llamaban Veta Miriam.
1.8 MÉTODO DE MINADO
BREASTING En este minado, se realiza un corte y relleno ascendente (upper cut and fill), este método es utilizado para realizar una explotación selectiva del tajo con el fin de obtener minerales de alta ley ya que se hay una gran reducción en el factor de la dilución. Además este
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FRONTONEO Este método es utilizada antes del proceso de desarrollo. Consiste en la realización de labores lineales tales como: galerías, by pass, crucero, ventanas, estocadas. En este método se realizan perforaciones para obtener taladros los cuales van a ser cargados y posteriormente disparados. Se debe tener en cuenta el paralelismo, la distancia entre taladros y la distancia del taladro a la c ara libre.
REALCE Este método es utilizado para realizar recuperación del mineral en un tajo. Se realizan
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1.9 CONCENTRACION DE MINERALES El tipo de concentración que se le va a dar al mineral depende de la naturaleza de este con la finalidad de que se obtenga una recuperación óptima. Los minerales de la mina Esperanza son por lo general sulfuros y óxidos tipo II y III. Los sulfuros son generalmente tratados en la planta de flotación, mientras que los óxidos son tarados generalmente en la planta de cianuración.
CHANCADO En esta etapa proveniente de la mina Esperanza y de sus demás proveedores es triturado y reducido de tamaño y pasa por os procesos de chancado prim ario, secundario y terciario. Esto de realiza para obtener una mayor aérea de contacto de los componentes químicos
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-
El tamaño de de las partículas debe ser bastante pequeños para que el tiempo sea sea lo menor posible.
FILTRO Luego de ser concentrados los minerales tienen una gran cantidad de liquido, por esto son llevados a unos filtros para absorber el agua que contienen hasta tener una humedad de 0.2% aproximadamente. El agua retirada del concentrado es procesada para quitarles los componentes ácidos de esta y luego es reutilizada para la concentración del siguiente lote de mineral, así se logra reutilizar cerca del 80% de agua lo cual genera un gran ahorro para la empresa.
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1.10
CONSIDERACIONES AMBIENTALES
El área de medio ambiente tiene el principal objetivo de generar el menor impacto posible por parte de los residuos obtenidos propios de la actividad minera para ello se realizan diferentes actividades para lograr dicho objetivo. 19
CLASIFICACION DE LOS RESIDUOS En esta etapa los residuos son clasificados según su naturaleza. Para esto, se hace uso del código de establecido en el DS 055 2010 EM. Una parte de estos residuos van a ser utilizados para el relleno en las labores en los tajos en donde se utiliza el método de corte y relleno ascendente. La otra parte de los residuos son tratados antes de ser
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2. PARTICIPACION DIRECTA DEL ESTUDIANTE EN LA OCUPACION
2.1 DESCRIPCION DEL LUGAR DE TRABAJO Inicialmente, fui destacado a las labores de avance lineal para poder ir comprendiendo las labores 20
mineras. Las labores en las que estuve fueron: galerías, by pass, cruceros, ventanas, en las cuales pudo observar el ciclo de perforación y voladura, además conocer los distintos tipos de malla y arranque. .
GALERÏA
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CHIMENEAS Y PIQUES Son perforaciones de dimensiones de 2m x 1.25m los cuales sirven como conducto para ventilación, en donde los gases puedan salir de forma natural o artificialmente con la ayuda de ventiladores y mangas de ventilación. Además existen dos piques principales por las cuales ingresa aire fresco. Para la realización de la chimeneas se utilizan tres personas (una perfora, el segundo le ayuda a sostener el stopper y la tercera se encarga del control de aire y agua), mientras que en la realización de piques, la tercera persona se encarga de bombear el agua producida por la perforación.
CÁMARA DE ACUMULACION Las cámaras de acumulación temporal son espacios establecidos para la acumulación del
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2.2 DETALLE DE LOS TRABAJOS REALIZADOS Cuando llegué a la mina Esperanza, con la ayuda del ingeniero César Flores, realizamos un plan de prácticas el cual constaba de 5 etapas (geomecánica, operación mina, seguridad, geología,
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Luego se utilizó el programa Dips para hallar l as familias principales
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Finalmente se insertó los valores en el unwedge para saber si l a estructura era estable
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OPERACIÓN MINA
En esta etapa, primero empecé a realizar mediciones de labores de avance tales como: galerías, cruceros, piques, chimeneas, by pass, ventanas. Luego, me mandaron a ayudar en
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Control de tiempos Inicio
07:00:00
Reparto de Guardia
07:03:00
Ir
07:18:00
la Labor
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