• Title/Summary/Keyword: mine production

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Application of 3-Dimensional Modeling in Mine Feasibility Study and Production (광산개발 타당성 평가 및 생산에 있어서 3차원 모델링 적용 사례)

  • Choi, Yong-Kun;Heo, Seung;Park, Joon-Young;Kim, Jang-Ha;Lee, Sung-Am
    • 한국지구물리탐사학회:학술대회논문집
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    • 2009.05a
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    • pp.89-100
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    • 2009
  • 3-dimensional modeling methods have been used in the every step of resource development; Exploration, reserve estimation, mine feasibility study, mine design and mine production. This report shows seven cases for which 3-dimensional modeling is used in resource development. Six projects deal with resource esimation, mine feasibility study and production. And another deals with mine rehabilitation. These cases show that 3-dimensional modeling method is beneficial to understand the real state of ore deposit and complex underground structures. Moreover, 3-dimensional modeling is the most efficient method for mine planning and management in the every step of resource development.

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An Interactive Planning and Scheduling Framework for Optimising Pits-to-Crushers Operations

  • Liu, Shi Qiang;Kozan, Erhan
    • Industrial Engineering and Management Systems
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    • v.11 no.1
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    • pp.94-102
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    • 2012
  • In this paper, an interactive planning and scheduling framework are proposed for optimising operations from pits to crushers in ore mining industry. Series of theoretical and practical operations research techniques are investigated to improve the overall efficiency of mining systems due to the facts that mining managers need to tackle optimisation problems within different horizons and with different levels of detail. Under this framework, mine design planning, mine production sequencing and mine transportation scheduling models are integrated and interacted within a whole optimisation system. The proposed integrated framework could be used by mining industry for reducing equipment costs, improving the production efficiency and maximising the net present value.

Mine Operation Management System for a Large Opencast Mine

  • Kumar, L. Ajay;Renaldy, T. Amrith;Raj, D. Edwin David;Vinoth, S.
    • Proceedings of the Korean Society for Rock Mechanics Conference
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    • 2008.10a
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    • pp.101-114
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    • 2008
  • An efficient mine management system demand constant attention of mine managers on the key performance indicators like production targets, equipment status, condition of haul roads, safety etc.. There is a wealth of information generated during day to day working of the mine. The success of a mining enterprise is a function of reliability of accumulated information and decision making on the basis of such information. In the present paper a computerized mine operations management system developed for a large opencast mine making use of the potential benefits of geographical information systems, real time kinematic global positioning systems and a communication network to improve the overall efficiency of the mine is presented.

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Suggesting Blasting Design for Kazakhstan mine using Korea Mining Technology (국내 광산 기술을 적용한 카자흐스탄 광산 발파설계 제안)

  • Jin, Yeon-Ho;Min, Hyung-Dong;Jeong, Min-Su;Park, Yoon-Suk;Heo, Eui-Haeng;Nurmatov, Murod
    • Explosives and Blasting
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    • v.32 no.1
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    • pp.10-17
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    • 2014
  • In this study, the information achieved from the visit to Kazakhmys mine in Kazakhstan was introduced. An optimal blasting pattern designed for the mine with the application of Korean blast technology was suggested. As a result, it was found that the blast design can reduce the consumption of explosives and the number of drill holes. The blast design can reduce the overall production cost in the mine.

Development of Applications for Recording Ore Production Data and Writing Daily Work Report of Dump Truck in Mining Sites (광산 현장의 원석 생산 데이터 기록 및 덤프트럭 작업일지 작성을 위한 애플리케이션 개발)

  • Park, Sebeom;Choi, Yosoon
    • Tunnel and Underground Space
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    • v.32 no.2
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    • pp.93-106
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    • 2022
  • This study developed applications that allows truck drivers to record ore production data using smart devices at mine sites and to create a daily work report (operation report) in a PC environment. For this, four operating mines in Korea were selected as study areas, and daily work reports used there were investigated. The information elements included in the daily work report of each mine were analyzed. Because the information to be collected for writing ore production data and format of report are different for each mine, four types of applications were developed for the study areas. Ore production data could be recorded by receiving a signal from a Bluetooth beacon and by operating the application directly by the truck driver. The collected data files are uploaded to the cloud server, and the uploaded data files can be converted into a daily work report using the developed applications in a PC environment.

A Study on the Field test of the Ready-mixed Shotcrete using in the Large-scale Mine (광산 대규격 갱도에 대한 레디믹스트 숏크리트의 현장 적용성 평가)

  • Kim, Dong-Min;Lee, Heung-Soo;Shin, Hong-Jun;Kang, Dong-Jun
    • Proceedings of the Korean Geotechical Society Conference
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    • 2009.09a
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    • pp.1511-1516
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    • 2009
  • In recent years, the large-scale shaft have been appling in domestic mine for mass production using a large machine, the safety of mine also have been increasing. And the new trial that shotcrete of tunnel field was apply to mine support was progressed. But, the conditions of domestic mine was different from that of tunnel, so, the batch plant of tunnel could not be installed in mine field because of low economical efficiency and difficulty for selection of site. Ready-mixed Shotcrete that mixed with high quality materials and could be controled shotcrete quality is producted in plants and transported to field, so do not need to batch plant. In this study, The Field test of the Ready-mixed Shotcrete was performed in the large-scale mine and was compared with the quality of Field mix shotcrete. As the result of the Field test, compressive strength and rebound of Ready-mixed Shotcrete were superior to these of Field mix shotcrete.

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Contributors to Fatigue of Mine Workers in the South African Gold and Platinum Sector

  • Pelders, Jodi;Nelson, Gill
    • Safety and Health at Work
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    • v.10 no.2
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    • pp.188-195
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    • 2019
  • Background: Mine workers in South Africa face challenges relating to poor health and safety, including fatigue risks, and poor socioeconomic and living conditions. Fatigue results in impaired mental and physical performance. The aim of this study was to assess contributors to fatigue of mine workers in South Africa. Methods: Data collection took place at four gold mines and one platinum mine in South Africa. A total of 21 focus groups were held with individuals in management, union representatives, and mine workers, and 564 questionnaires were completed by mine workers to gather information about fatigue and potential contributors to fatigue at these mines. Results: Qualitatively (through focus groups), fatigue was attributed to extended working hours, harsh working conditions, high workloads, production pressure, and resource constraints, along with aspects relating to demographic and socioeconomic factors, living conditions, lifestyle, health, and wellness. Greater fatigue was significantly associated with younger age, indebtedness, a lack of exercise, poor nutrition, less sleep, increased alcohol use, poor self-reported health, more sick leave, higher stress, and lower job satisfaction. Conclusion: The aim of the study was achieved; numerous work-, sociodemographic-, lifestyle-, and wellness-related factors were linked to fatigue in the participating mine workers. Contributors to fatigue should be addressed to improve health, safety, and sustainability in the industry.

Development and Utilization of Mine Management Software: A Review (광산관리 소프트웨어의 개발 현황 및 활용사례 분석)

  • Park, Sebeom;Choi, Yosoon
    • Tunnel and Underground Space
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    • v.25 no.3
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    • pp.221-230
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    • 2015
  • This study examined and analyzed several mine management software programs developed in domestic and oversea countries. In the oversea countries, many companies have developed and commercialized mine management softwares such as Dispatch, $Cat^{(R)}$ $MineStar^{TM}$ and FARA. These softwares provide many functionalities including real-time machine tracking, machine assignment optimization, productivity management, equipment health monitoring and remote control. For the domestic cases, this study reviewed two software programs (i.e., GEMISIMS, Truck-Shovel fleet optimization) developed by several researchers because there is no mine management software currently commercialized in Korea. In addition, this paper reports the two cases at the Jwaneng mine in Botswana and at the Robinson mine in United States where mine management software programs are used to support mine operations.

Studies on the Effect of Diffusion Process to Decay Resistance of Mine Props (간역(簡易) 처리법(處理法)에 의한 갱목(坑木)의 내부효력(耐腐效力)에 관(關)한 연구(硏究))

  • Shim, Chong-Supp;Shin, Dong-So;Jung, Hee-Suk
    • Journal of the Korean Wood Science and Technology
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    • v.10 no.3
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    • pp.166-166
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    • 1982
  • This study has been made to make an observation regarding present status of the coal mine props which is desperately needed for coal production, despite of great shortage of the timber resources in this country, and investigate the effects of diffusion process on the decay resistances of the mine props as applied preservatives of Malenit and chromated zinc chloride. The results are as follows. 1. Present status of the coal mine props Total demand of coal mine props in the year of 1975 was approximately 456 thousand cubic meters. The main species used for mine props are conifer (mainly Pinus densiflora) and hardwood (mainly Quercus). Portions between them are half and half. With non fixed specification, wide varieties of timber in size and form are used. And volume of wood used per ton of coal production shows also wide range from 0.017 cubic meter to 0.03 cubic meter. 2. Decay resistance test a) The oven dry weight decreased between untreated specimen and treated specimen has not shown any significantly, although it has shown some differences in average values between them. It may be caused by the shorter length of the test. b) The strength of compression test between untreated specimen and treated specimen has also shown the same results as shown in case of weight decrease. Reasons assumed are the same. c) The amounts of the extractives in one percent of sodium hydroxide (NaOH) between untreated and treated specimen have shown the large value in case of untreated specimen than that of treated. 3. The economical benifit between untreated and treated wood when applied in field has seen better in long tenn base in case of treated wood, although the primary cost of treated wood add a little bit more cost than that of the untreated wood.

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Post-pillars design for safe exploitation at Trepça hard rock mine (Kosovo) based on numerical modeling

  • Ibishi, Gzim;Genis, Melih;Yavuz, Mahmut
    • Geomechanics and Engineering
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    • v.28 no.5
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    • pp.463-475
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    • 2022
  • In the mine exploitation stage; one of the critical issues is the stability assessment of post-pillars. The instability of post-pillars leads to serious safety hazards in mining operations. The focus of this study is to assess the stability of post-pillars in the 130# stope in the central ore body at Trepça hard rock mine by employing both conventional (i.e., critical span curve) and numerical methods (i.e., FLAC3D). Moreover, a new numerical based index (i.e., Pillar Yield Ratio-PYR) was proposed. The aim of PYR index is to determine a border line between stable, potentially unstable, and failure state of post-pillars at a specific mine site. The critical value of pillar width to height ratio is 2.5 for deep production stopes (e.g., > 800 m). Results showed that pillar size, mining height and mining depth significantly have affected the post-pillar stability. The reliability of numerical based index (i.e., PYR) is verified based on empirical underground pillar stability graph developed by Lunder, 1994. The proposed pillar yield ratio index and pillar stability graph can be used as a design tool in new mining areas at Trepça hard rock mine and for other situations with similar geotechnical conditions.