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Hållfasthetsundersökning av pastafyll i Zinkgruvan
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering.
2017 (Swedish)Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
Abstract [en]

The current mining method in Zinkgruvan today is underhand stoping. With this method the ore is mined downwards in disks. When the ore is extracted the stope is backfilled with paste which contains tailings, cement and water. The paste will constitute the ceiling in lower levels and are therefore vital for the safety and the requirements of the strength.

The goal of this thesis is to increase knowledge about the paste’s strength after the usual tests within 28 days. Test objects are taken from two different paste’s in Burkland and Nygruvan and compares with old data from the same sights.

Besides the test objects that are taken from the mine there are also some studys on the literature with consideration on mine backfill in other mines using a similar mining method. By interviewing experts at Zinkgruvan increased knowledge is acquired about the production and the company.

By the results an indication is given regarding the possibility of optimizing the paste containing eight percent cement to a lower amount in order to reduce costs.

The results shows that the paste increases in strength after standard testing within 28 days.

Place, publisher, year, edition, pages
2017. , p. 23
Keywords [sv]
Pastafyll, UCS, Nedåtgående pallbrytning, Zinkgruvan
National Category
Mineral and Mine Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-65504OAI: oai:DiVA.org:ltu-65504DiVA, id: diva2:1138558
External cooperation
Zinkgruvan mining AB
Subject / course
Student thesis, at least 7,5 credits
Educational program
Mining and Geotechnical Industry, Higher Education Diploma
Supervisors
Examiners
Available from: 2017-09-28 Created: 2017-09-05 Last updated: 2017-09-28Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf