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Evaluation of near to face sorting plant in an underground mine: A case study from Kristineberg mine
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-7334-4934
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-2306-9241
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. University of Dar Es Salaam, Department of Chemical and Mining Engineering.
Boliden Mineral AB, Stockholm.
Number of Authors: 42016 (English)In: 2016 SME Annual Conference and Expo: The Future for Mining in a Data-Driven World, Phoenix, United States, 21 - 24 February 2016, New York: Society for Mining, Metalurgy and Exploration, 2016, p. 379-383Conference paper, Published paper (Refereed)
Abstract [en]

Mining of ore bodies that are located at great depths enforces long distances to move the excavated rock masses to the surface. The excavated rock mass contains not only ore that can be economically extracted from the face but also waste, which is usually discarded several steps further downstream in the process. As a result large amount of rock masses are transported to the surface, influencing the costs at which the ore is produced. Reducing the amount of waste being transported to the surface by introducing near to face sorting plant would improve the in many cases strained transport system in the deep mine. In this study, one of Boliden’s cut and fill mines was analysed with respect to the challenges related to mass movement and increasing mining depth. The study aims to evaluate the use of the new near to face sorting system in the operating underground mine. Discrete event simulation was used to study and analyse the mass movement with and without the near to face sorting plant. The paper shows how the underground mass movement system and the production were influenced when a near to face sorting equipment was added into the current system.

Place, publisher, year, edition, pages
New York: Society for Mining, Metalurgy and Exploration, 2016. p. 379-383
Keywords [en]
Deep underground mining, Cut and fill mining, Transportation system, Near to face sorting, Discrete Event Simulation, Civil engineering and architecture - Geoengineering and mining engineering
Keywords [sv]
Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik
National Category
Other Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-28116Scopus ID: 2-s2.0-84988353587Local ID: 1caff48e-9d53-4601-81a1-16e959f205c4ISBN: 9781510825659 (print)OAI: oai:DiVA.org:ltu-28116DiVA, id: diva2:1001310
Conference
SME Annual Conference & Expo : 21/02/2016 - 24/02/2016
Projects
Innovative Technologies and Concepts for the Intelligent Deep Mine of the Future
Note

Godkänd; 2016; 20151013 (barska)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-04-17Bibliographically approved
In thesis
1. Rock mass transportation systems in underground mines: consequences and solutions when mining at greater depths
Open this publication in new window or tab >>Rock mass transportation systems in underground mines: consequences and solutions when mining at greater depths
2017 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The research presented in this thesis addresses a number of challenges related to rock mass transportation in deep underground mines. In particular, high energy consumption and high exhaust gas emissions from diesel and electric LHDs, the effects of ore pass loss on the loading, hauling and dumping operations due to increasing stresses and increasing costs due to the longer vertical transportation of the rock masses. These critical challenges have been identified by a literature review and analysis of data collected from 15 international deep mines. In order to answer the formulated research questions, three studies on various issues related to rock mass transportation in deep underground mines were made, and the analysis was performed mainly using discrete event simulation.

The thesis presents a study of energy consumption and exhaust gas emissions from diesel and electric LHDs with similar bucket sizes. The results show the possible energy savings and a decrease in CO2 emissions when using electric LHDs instead of diesel ones. The thesis also presents a study of the effects of ore pass loss on LHD operations and on the mine production. Maintaining the production with a lower number of operational ore pass structures by increasing the number of LHDs can have a negative effect on the production. This is because an increased number of LHDs in operation will results in increased waiting times for the LHDs and cause variations in the production rate. These variations can be large, causing severe consequences if not managed correctly. The results also show the importance of developing alternative plans for underground loading and hauling operations in case of an ore pass loss. Transportation of rock, especially when mining depth increases, is often associated with high costs and long transportation times. To decrease the amount of unnecessary rock transportation, near-to-face sorting plants may be one alternative. In the thesis, a study was performed on a possible reduction in rock mass transportation to the surface when using this technique. The results conclude that near-to-face sorting plants could lower the environmental effects generated by unnecessary rock transportation to the surface.

Place, publisher, year, edition, pages
Luleå: Luleå University of Technology, 2017
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
National Category
Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
urn:nbn:se:ltu:diva-63089 (URN)978-91-7583-886-1 (ISBN)978-91-7583-887-8 (ISBN)
Presentation
2017-05-29, F1031, Luleå, 10:00
Available from: 2017-04-21 Created: 2017-04-19 Last updated: 2018-04-17Bibliographically approved

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Skawina, BartlomiejGreberg, JennySalama, AbubakaryNovikov, Evgeny

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