Journal of Mining Engineering and Research最新文献

Pillar recovery using new wireless blasting technology: a case study in Vazante mine, Brazil 采用新型无线爆破技术回收矿柱:以巴西Vazante矿为例

Journal of Mining Engineering and Research Pub Date : 2021-08-17 DOI: 10.35624/JMINER2021.01.03

W. Andrade, M. Ribeiro, C. Lima, F. Santos, F. Biulchi

{"title":"Pillar recovery using new wireless blasting technology: a case study in Vazante mine, Brazil","authors":"W. Andrade, M. Ribeiro, C. Lima, F. Santos, F. Biulchi","doi":"10.35624/JMINER2021.01.03","DOIUrl":"https://doi.org/10.35624/JMINER2021.01.03","url":null,"abstract":"The application of explosives has never been considered as a major influencing factor during either the designing of a mine or the selection of the mining method. However, this has changed with the launch of WebGenTM wireless blasting system, which allowed underground mines to exploit their orebody applying methods previously not possible due to limitations imposed by the use of wired detonators. The wireless blasting system is based on magnetic induction communication, and its signal is capable of overcoming hundreds of meters through rock, water, and air, to reach individual primers in the blastholes without any physical connection.A noble application of wireless detonators is being used in Vazante mine, Brazil, an underground zinc mine where ore pillars are left in the mined stope to secure stability and minimize dilution by limiting the hydraulic radius. The recovery of these pillars is financially desirable but involves extra time and costs associated with scaling, backfilling, reinstalling infrastructure, accessing areas previously blasted (less stable), drilling, charging with explosives, and subsequently, firing and mucking out the blasted material with expected high dilution. Applying 100% wireless detonators made it possible to safely preload the pillar together with production blasts before losing access to the area, a method named Temporary Rib Pillar (TRP). After all the stope is mined and the pillar accomplished its objectives, the primers are initiated without neither the need for the extra cycles described previously, nor the need to re-enter the area. Thus, it was possible to reduce the exposure of people and equipment, reduce operational cycles, and increase ore recovery, directly contributing to anticipate the ore production while guaranteeing the safety of the teams involved.","PeriodicalId":372737,"journal":{"name":"Journal of Mining Engineering and Research","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125527246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Una revisión de los factores que afectan a la generación de vibraciones y modelos predictivos empíricos 回顾影响振动产生的因素和经验预测模型

Journal of Mining Engineering and Research Pub Date : 2021-08-17 DOI: 10.35624/JMINER2021.01.02

M. Cánovas, E. Trigueros

引用次数: 0

Tacos de alto rendimiento TN – Una Innovación probada para la Minería Subterránea TN高性能螺杆-一种久经考验的地下采矿创新

Journal of Mining Engineering and Research Pub Date : 2021-08-17 DOI: 10.35624/jminer2021.01.05

J. Bastias, G. Escribá, I. Ormeño, M. Villalobos

{"title":"Tacos de alto rendimiento TN – Una Innovación probada para la Minería Subterránea","authors":"J. Bastias, G. Escribá, I. Ormeño, M. Villalobos","doi":"10.35624/jminer2021.01.05","DOIUrl":"https://doi.org/10.35624/jminer2021.01.05","url":null,"abstract":"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.","PeriodicalId":372737,"journal":{"name":"Journal of Mining Engineering and Research","volume":"224 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115256865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nuevas perspectivas para la exploración en zonas de cobertura post-mineral: caso de estudio en la pampa caya (20°30’ - 21°s) 矿物覆盖区勘探新视角:la pampa caya案例研究(20°30 ' - 21°s)

Journal of Mining Engineering and Research Pub Date : 2021-08-17 DOI: 10.35624/JMINER2021.01.04

P. A. Molina, B. Madariaga, W. Garrido, S. Perroud, G. Fuentes

{"title":"Nuevas perspectivas para la exploración en zonas de cobertura post-mineral: caso de estudio en la pampa caya (20°30’ - 21°s)","authors":"P. A. Molina, B. Madariaga, W. Garrido, S. Perroud, G. Fuentes","doi":"10.35624/JMINER2021.01.04","DOIUrl":"https://doi.org/10.35624/JMINER2021.01.04","url":null,"abstract":"En la Cordillera de Domeyko, al noreste del distrito minero Collahuasi, se encuentra la Pampa Caya, una cuenca sedimentaria de edad miocena, que cubre casi en totalidad la geología de la zona. A partir del uso de datos geofísicos de potencial magnético y gravimétrico se determinaron las unidades y estructuras geológicas que se encuentran bajo la cobertura en la Pampa Caya. Utilizando filtros Pasa-Baja, Pasa-Alta y primeras derivadas verticales del Vector Residual del Campo Magnético y Anomalía de Bouguer, se logró interpretar anomalías geofísicas que indican una continuidad de las formaciones y estructuras ocultas bajo la pampa. Con estos resultados fue posible correlacionar la continuidad de las formaciones Collahuasi, Quehuita y Cerro Empexa, fallas inversas locales y establecer la continuidad latitudinal del Sistema de Falla de Domeyko. Las características geológicas y geofísicas distintivas regionales para franjas metalogénicas andinas y distritales del clúster de Collahuasi fueron aplicadas en la zona de estudio, con la finalidad de proponer un mapa prospectivo bajo la cobertura post-mineral de la Pampa Caya.","PeriodicalId":372737,"journal":{"name":"Journal of Mining Engineering and Research","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121264258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Proyección de precio de largo plazo del cobre: un enfoque metodológico crítico 铜的长期价格预测:一种关键的方法论方法

Journal of Mining Engineering and Research Pub Date : 2021-06-10 DOI: 10.35624/jminer2020.01.05

Cintia Roa

引用次数: 0

Dynamic Complexity: Senior Management Skills for the Safety of Present-Day Mining Companies 动态复杂性:现代矿业公司安全的高级管理技能

Journal of Mining Engineering and Research Pub Date : 2021-06-10 DOI: 10.35624/jminer2020.01.03

Jorge Pedrals

{"title":"Dynamic Complexity: Senior Management Skills for the Safety of Present-Day Mining Companies","authors":"Jorge Pedrals","doi":"10.35624/jminer2020.01.03","DOIUrl":"https://doi.org/10.35624/jminer2020.01.03","url":null,"abstract":"Based on the author’s more than 35 years of experience in mining projects and operations’ management – including the expansion of CODELCO’s El Teniente with rock blasting challenges that threatened its continuity – this article introduces a new way of facing safety in today’s companies. The proposal divides the management process into four stages: i) Adequate context diagnostic; ii) How people perceive reality; iii) An action plan; and iv) A focused and goal-oriented organization, where the key is understanding how people learn and interpret the existing reality. Based on these variables, organizations are challenged with developing a capacity to integrate corporate Dynamic Complexity – with “uncertainties” as a key variable – with their environment, both local and global. The proposal includes the Inverted Pyramid of Corporate Responsibility, where the integration capacity to manage communication and outreach processes as part of the company’s continuous development lies in the Board of Directors and the Top Management, thereby allowing the company to correctly address the cultural, professional, and educational diversity of its work teams, facing an increasingly uncertain environment. ","PeriodicalId":372737,"journal":{"name":"Journal of Mining Engineering and Research","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129282025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the strength property and ratio parameter selection of waste rock cemented backfill 废石胶结充填体强度特性及配比参数选择研究

Journal of Mining Engineering and Research Pub Date : 2021-06-10 DOI: 10.35624/jminer2020.01.02

Xiaoming Wei, Guo Lijie, Lei Zhang

{"title":"Study on the strength property and ratio parameter selection of waste rock cemented backfill","authors":"Xiaoming Wei, Guo Lijie, Lei Zhang","doi":"10.35624/jminer2020.01.02","DOIUrl":"https://doi.org/10.35624/jminer2020.01.02","url":null,"abstract":"When tailings are used for cemented backfill preparation, the extremely fine unclassified tailings may lead to slow consolidation and low strength of backfill material. Wasted rock as an additional filling aggregated was suggested to optimize the gradation composition of aggregate by scholars over the world. In this paper, the effect of waste rock addition, cement-tailing ratio and slurry concentration on strength and flow properties of waste rock cemented backfill were studied. The results indicate the strength of waste rock cemented backfill was significantly higher than that of unclassified tailings cemented backfill under same cement consumption, which the average strength improvements were 2.02MPa, 0.98MPa and 0.46MPa under cement-tailing ratio of 1:4, 1:8 and 1:10. With the increase of waste rock addition, the strength change of waste rock cemented backfill was less obvious, but the flow property (yield stress) of filling slurry was improved. Further analysis of the slurry stability illustrates that, with the increase of waste rock addition, the bleeding rate demonstrated a trend similar to that observed for the flow property, however, in an adverse manner. Overall, the optimal slurry concentration of 80% and waste rock addition of 40%～50% were determined. Based on the strength requirement, cement dosage was selected, which the cement-tailing ratio of top 10m and the bottom 10m was 1:8, the cement-tailing ratio of the centre stope was 1:10. The research findings can provide a reference for the ratio parameter determination of extremely fine unclassified tailings backfill of similar mines.","PeriodicalId":372737,"journal":{"name":"Journal of Mining Engineering and Research","volume":"26 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120980334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Towards autonomous operations in the mining industry: the role of human factors. 采矿业走向自主经营:人为因素的作用。

Journal of Mining Engineering and Research Pub Date : 2020-12-20 DOI: 10.35624/JMINER2020.01.08

E. Widzyk-Capehart, A. Zablocki

{"title":"Towards autonomous operations in the mining industry: the role of human factors.","authors":"E. Widzyk-Capehart, A. Zablocki","doi":"10.35624/JMINER2020.01.08","DOIUrl":"https://doi.org/10.35624/JMINER2020.01.08","url":null,"abstract":"In the past 30 years, Latin American mining industry passed under the sign of technological advances; first with the incorporation of mechanized equipment and then teleoperation and automation in many aspects of the excavation process. In that respect, Chile is the leading country, although lately Peru, Mexico and Brazil are showing a growing interest in introducing new technologies in their mining operations. Positive aspects of these changes can be seen in continuous improvements of operations and processes, increased in innovation and improvements in safety. However, with few exceptions, the involvement of top management in enabling innovation and rapid technological implementation has often been insufficient. This, however, is changing dramatically as mining companies look towards automatization to maximize productivity and profitability, remove mining personnel from dangerous environments as well as bypass human limitations to meet new challenges, which would allow the humans to make strategic decisions while being supported by the machines and the connected environment. This paper examines the human factors issues related to the implementation of automated system in general with some examples from Chilean open pit and underground mines.","PeriodicalId":372737,"journal":{"name":"Journal of Mining Engineering and Research","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114864094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Análisis nueva Fundición y Refinería de Cobre en Chile 智利新铜冶炼和精炼厂分析

Journal of Mining Engineering and Research Pub Date : 2020-12-20 DOI: 10.35624/JMINER2020.01.07

C. G. Ávila

{"title":"Análisis nueva Fundición y Refinería de Cobre en Chile","authors":"C. G. Ávila","doi":"10.35624/JMINER2020.01.07","DOIUrl":"https://doi.org/10.35624/JMINER2020.01.07","url":null,"abstract":"Chile con el tiempo ha disminuido su competitividad en el mundo de las fundiciones, dado que las tecnologías utilizadas actualmente no han permitido alcanzar niveles de costos de operación comparables con fundiciones que operan con tecnologías más modernas. Por otro lado, China se alza como una gran competencia, ya que, sus fundiciones operan con la última tecnología del mercado y con elevados niveles de captación de SO2 y AS. Por esta razón, este trabajo documenta el análisis de alternativas tecnológicas para una nueva FURE de concentrados de cobre en Chile, de categoría mundial, competitiva en costos y con elevados niveles de captación de SO2 y As, superiores a los establecidos en el D28. Para lograr esto, se definieron condiciones de borde y criterios del estudio, se realizó un análisis FODA, metodología AHP, balances de masa y evaluación económica, con lo cual se obtiene que la configuración tecnológica de fusión BBR-BBC-PFE parece ser la mejor alternativa para una nueva FURE de concentrados de cobre en Chile, pero, debido a la escasa información disponible, esta alternativa representa un riesgo respecto a las otras. Es importante destacar que este trabajo es una oportunidad de negocio, desarrollada a un nivel preliminar, que requiere de estudios posteriores para confirmar la alternativa BBR-BBC-PFE como un real caso de negocio.","PeriodicalId":372737,"journal":{"name":"Journal of Mining Engineering and Research","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133555278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimización de planificación de desarrollo y preparación de corto plazo en minería subterránea 地下采矿短期开发规划与准备的优化

Journal of Mining Engineering and Research Pub Date : 2020-12-20 DOI: 10.35624/JMINER2020.01.09

L. Álvarez, N. Morales

引用次数: 0